For the past several months, Ego has been writing a book of tutorials!
This book, comprising of 8 lessons and three appendices across 207 pages, is titled Learning Pixel Art and is now officially available for purchase for the low price of $0.99 as an ebook on Amazon.
Additionally, there is a wealth of preview material available here: Learning Pixel Art Resource Page
Purchase the book here: Learning Pixel Art on Amazon
The book is written in plain language that avoids jargon and clearly defines all the terms it uses, as well as being chock-full of informative diagrams, making it easy for a newbie to pick up, but deals with major topics like clusters, color selection, and starting a piece, making it a valuable read even for the experienced pixel artist. If you're looking for step-by-steps on how to create some single piece, look elsewhere; this book will teach you the foundational techniques of pixel art and how to apply them in any circumstance.
If you're wondering why you should listen to what I have to say, I've been analyzing and critiquing pixel art for years, and have been recognized for my helpful, comprehensive, and clear explanations.
I'd love to know what you think of the book, especially if you feel you learned something. Definitely let me know if you publish any of your creations from doing the exercises!