Artificial intelligence is already part of our present—and mastering its tools is what separates those who merely observe from those who create the future. This eBook brings together, in one place, the most important and widely used AIs in the world, explained in a clear, organized, and practical way. You will understand what each tool does, who it is intended for, and how to apply it in your daily life — whether for studying, working, entrepreneurship, or content creation. From ChatGPT to Midjourney, from Gemini to Sora, this guide presents the best options for text, image, audio, video, music, translation, and automation, with comparisons, tips, and real-life examples of use. More than a catalog of tools, this is a manual for understanding and intelligently applying technology — ideal for beginners, professionals, and curious minds who want to make the most of the digital revolution.