The eBook Archive

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Elasticsearch Tutorial

Delve into the world of the Elasticsearch search engine with this comprehensive guide that introduces you to the Elasticsearch framework! Elasticsearch is a search engine based on Lucene. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java and is released as open source under the terms of the Apache License. Elasticsearch is the most popular enterprise search engine followed by Apache Solr, also based on Lucene. Elasticsearch can be used to search all kinds of documents. It provides scalable search, has near real-time search, and supports multitenancy. Elasticsearch is distributed, which means that indices can be divided into shards and each shard can have zero or more replicas. Each node hosts one or more shards, and acts as a coordinator to delegate operations to the correct shard(s). Rebalancing and routing are done automatically. Related data is often stored in the same index, which consists of one or more primary shards, and zero or more replica shards. Once an index has been created, the number of primary shards cannot be changed In this ebook, we provide a series of tutorials so that you can develop your own Elasticsearch based applications. We cover a wide range of topics, from installation and operations, to Java API Integration and reporting. With our straightforward tutorials, you will be able to get your own projects up and running in minimum time. With this free eBook you will also receive weekly news, tips and special offers delivered to your inbox courtesy of Java Code Geeks.

Jun 17, 2026 8 min read Premium

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Prompt Engineering Frameworks for Better ChatGPT Results ($21 Value) FREE For a Limited Time

Get faster, clearer AI responses with this proven RT-CROS prompt framework for ChatGPT and GPT-5. Busy professionals waste hours rewriting prompts. This guide fixes that. The RT-CROS prompt framework shows you how to write clearer, smarter prompts for ChatGPT and other AI tools. Each section breaks down one part of the formula - Role, Task, Context, Reasoning, Output, and Stop Conditions - so you get better AI results in less time. This isn’t another prompt list. It’s a system that teaches you how to think like a pro prompt engineer. Whether you write emails, summarize research, or generate content, this guide helps you ask AI the right way. Download now to skip guesswork and get more consistent, useful AI answers. In this book you will learn: A complete prompt example for productivity and learning use cases Start writing better prompts today. Download your copy.

Jun 17, 2026 8 min read Premium

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The Ultimate Facebook Privacy and Security Checklist

Prepare yourself for hacks and data breaches. Here are all the steps you should take to lock down your Facebook profile and control your privacy. When social media started building traction in the early 2000s, privacy was less of a concern due to the limitations of social media platforms, and perhaps because fewer people had access to the internet. Nowadays, thanks to security breaches and data leaks, we're all very aware that our digital privacy is volatile. With the vast amount of information available on your Facebook profile, it's important to protect your privacy against identity theft, hackers, and people who may want to gain access to your account. By limiting personal data accessible by others, you can protect yourself and those around you. To help you out, we've put together a checklist of steps you can take to lock down your Facebook profile. We've separated these by the different sections found within Facebook's settings page. It's all available on this free downloadable PDF cheat sheet.

Jun 17, 2026 8 min read Premium

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The Power of Thanks in the Workplace

How to Show Gratitude & Appreciation to Your Employees Throughout the Holiday Season While showing employee appreciation should be a year-round initiative, the holiday season is the perfect time to amplify your efforts. In fact, recognition increases employee engagement, productivity, and performance by 14%. This eBook shows how organizations can promote a culture of gratitude towards employees—both during the holidays and year-round—and why cultivating this culture of gratitude is so vital to employee satisfaction and wellbeing as a whole.

Jun 17, 2026 8 min read Premium

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The Complete Free AI Learning Library: Master ChatGPT, Claude, Gemini & More ($21 Value) FREE For a Limited Time

Access 8 curated AI learning tracks to master ChatGPT, Claude, Gemini, Midjourney, and more. Learn faster, automate smarter, and upskill for free. Want to master AI without paying for another course? This guide gives you direct access to the best free AI tutorials, tools, and training libraries available in 2026. It’s not just about learning ChatGPT or Claude. This all-in-one resource covers 8 major AI platforms, from prompt engineering to automation, video generation, and visual design. Each section links to practical, proven resources so you can build real skills fast. In this book you will learn: Perfect for busy professionals ready to level up without the fluff. All tools and links are free and beginner-friendly. Download now and build your AI mastery blueprint.

Jun 17, 2026 8 min read Premium

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Amazon AWS Lambda Tutorial

Delve into the world of AWS Lambda with this comprehensive guide that introduces you to the Amazon AWS Lambda computing service! AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of the Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code. AWS Lambda was designed for use cases such as image or objects uploads to Amazon S3, updates to DynamoDB tables, responding to website clicks or reacting to sensor readings from an IoT connected device. AWS Lambda can also be used to automatically provision back-end services triggered by custom HTTP requests, and "spin down" such services when not in use, to save resources. Now, we provide a comprehensive guide so that you can develop your own Amazon Lambda based applications. We cover a wide range of topics to be able to get your own projects up and running in minimum time. Enjoy! With this free eBook you will also receive weekly news, tips and special offers delivered to your inbox courtesy of Java Code Geeks.

Jun 17, 2026 8 min read Premium

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JUnit Programming Cookbook

Delve into the world of JUnit Programming with this comprehensive guide that introduces you to the JUnit testing framework! JUnit is a unit testing framework to write repeatable tests. JUnit has been important in the development of test-driven development, and is one of a family of unit testing frameworks which is collectively known as xUnit that originated with SUnit. A research survey performed in 2013 across 10,000 Java projects hosted on GitHub found that JUnit, (in a tie with slf4j-api), was the most commonly included external library. In this eBook, we provide a compilation of JUnit tutorials that will help you kick-start your own programming projects. We cover a wide range of topics, from basic usage and configuration, to multithreaded tests and integration with other testing frameworks. With our straightforward tutorials, you will be able to get your own projects up and running in minimum time. With this free eBook you will also receive weekly news, tips and special offers delivered to your inbox courtesy of Java Code Geeks.

Jun 17, 2026 8 min read Premium

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Top 5 Gamma AI Hacks to Save Design Time ($21 Value) FREE For a Limited Time

Save hours on presentations with five practical Gamma AI hacks. Learn how to reuse templates, lock brand styles, and automate exports using smart AI design workflows. Most time is not lost designing. It is lost repeating the same layouts, styles, and exports. Small tasks add up and drain your focus. Top 5 Time-Saving Gamma Hacks shows you how to reduce repetition and automate your AI design workflow. These strategies help you move from idea to finished presentation faster, without rebuilding from scratch. You will learn how to duplicate what already works instead of restarting. You will reuse high performing templates to create new outputs with the same layout logic. You will lock your brand color presets once and apply them everywhere. You will generate multiple AI design options in seconds and choose with clarity. Finally, you will export and share in one click. This guide blends ChatGPT prompts, AI productivity tools, and structured design systems. You spend less time managing formatting and more time shaping ideas. In this book you will learn: This resource suits founders, consultants, and marketers who value speed and consistency. Download now and streamline your AI design workflow

Jun 17, 2026 8 min read Premium

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Microservices for Java Developers

Delve into the world of Microservices with this comprehensive guide and find Hot Recipes for Java Developers! Microservices are a software development technique – a variant of the service-oriented architecture (SOA) structural style – that arranges an application as a collection of loosely coupled services. In this book, we provide a comprehensive guide about Microservices for Java Developers. We cover a wide range of topics, from Microservices Communication and Implementing microservices to Managing Security, Testing, Monitoring and Alerting. With this guide you will be able to get your own projects up and running in minimum time. Enjoy! With this free eBook you will also receive weekly news, tips and special offers delivered to your inbox courtesy of Java Code Geeks.

Jun 17, 2026 8 min read Premium

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22 Google AI Tools to Boost Productivity ($21 Value) FREE For a Limited Time

Explore 22 Google AI tools to streamline tasks, create faster, and get more done - no coding needed. Google now offers more than just search. Their latest AI tools help professionals automate work, create content, and simplify research - with almost no learning curve. This guide gives you an inside look at 22 top Google AI tools, including Gemini, NotebookLM, Imagen-4, and Google AI Studio. You’ll find clear, real-world use cases for marketers, creators, consultants, and developers. Each tool is explained in one page with practical examples - so you can pick the right tool and start using it fast. Whether you want to build no-code apps, design visuals, generate videos, or write smarter emails, this guide shows you what’s possible with Google-powered AI. In this book you will learn: 22 Google AI tools that simplify creative and technical workflows How to generate content, images, code, and video using plain prompts Which tools help automate tasks across Gmail, Docs, and Sheets How to build AI assistants and apps without writing code Which tools to test for marketing, design, learning, and dev teams See what Google AI can do for your productivity. Download now.

Jun 17, 2026 8 min read Premium

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A Marketer's Guide to connecting your data in Healthcare

The power dynamic in advertising has shifted, and consumers are in control. More than half of U.S. adults report avoiding ads. People have higher expectations than ever — often without even realizing it — and not all advertisers have adapted to their demands yet. Personalized marketing is challenging to do without a company that knows how to use data and technology strategically.

Jun 17, 2026 8 min read Premium

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How to Build an AI Design Workflow with Gamma ($21 Value) FREE For a Limited Time

Learn how to build a repeatable AI design workflow using ChatGPT prompts and Gamma. Create faster presentations, apply brand assets once, and turn ideas into consistent visual systems. Design should not feel random. Many teams treat it as a one time task. That creates scattered ideas, slow execution, and inconsistent results. How To Build A Design Workflow With Gamma shows a better path. You build a simple AI powered system that supports your thinking from draft to delivery. The process starts with intent. Define your goal, message, and key points before touching layout. Next, let AI generate structure, visual hierarchy, and smart layouts in one click. Then refine the story. Adjust tone. Highlight what matters. Apply brand assets once and reuse them across projects. Finally, download, publish, and repeat the workflow to compound results. This guide blends prompt engineering with practical execution. You stop redesigning from scratch. You protect your focus and reduce friction. In this book you will learn: • How to define concept and intent before designing slides • How to use AI tools to generate structure and layout instantly • How to refine messaging without rebuilding your deck • How to apply brand fonts, colors, and visual style once • How to create a repeatable AI productivity workflow This resource fits founders, consultants, marketers, and operators who need consistent output without hiring large design teams. Download now and build your own AI design workflow.

Jun 17, 2026 8 min read Premium

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Official GPT-5.2 Prompting Guide From OpenAI ($21 Value) FREE For a Limited Time

Master GPT-5.2 with this official guide. Learn how to prompt for accuracy, speed, and control. GPT-5.2 is built for agents, workflows, and production use - but prompting it correctly is key. This official OpenAI guide shows how to get the best results from GPT-5.2 in real-world settings. It covers everything from controlling verbosity to extracting data from PDFs, handling agent updates, and optimizing multi-tool workflows. Each page includes sample specs, structured templates, and precise tips for developers, operators, and power users. In this book you will learn: If you're building AI systems at scale, this is your blueprint for consistent, reliable GPT-5.2 performance Download now to prompt like a pro

Jun 17, 2026 8 min read Premium

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ChatGPT-5 Playbook: Prompt Structures, Tools, and Use Cases ($21 Value) FREE For a Limited Time

Master ChatGPT-5 with practical templates, expert tips, and real use cases across industries. ChatGPT-5 introduces a powerful mix of speed, reasoning, personalization, and multi-format input. This guide breaks down how to use it effectively - from setting up your workspace to automating research, coding, design, and more. Built for marketers, developers, analysts, and educators, this playbook delivers step-by-step prompt structures, sample use cases, and advanced features like agent mode, study mode, and GPT app creation. In this book you will learn: Whether you're a beginner or a power user, this playbook gives you a clear roadmap for using ChatGPT-5 to work faster and smarter. Download now and start building with the most advanced AI yet.

Jun 17, 2026 8 min read Premium

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The Ultimate Linux Newbie Guide

The ultimate guide for choosing, installing and using Linux for everyday people This guide can help both beginners and seasoned computer users alike learn all the important parts of choosing, using and installing Linux, a great free operating system for your computer and help you remove dependency on non-free, closed source software that is commonplace in Microsoft Windows or Mac OS. Throughout the guide, you’ll find out heaps of valuable information such as:

Jun 17, 2026 8 min read Premium