I picked up this book and enjoyed it just for the process, https://www.amazon.com/Make-Your-Own-Pixel-Art/dp/1593278861 https://www.amazon.com/Make-Your-Own-Pix

I picked up this book and enjoyed it just for the process, https://www.amazon.com/Make-Your-Own-Pixel-Art/dp/1593278861 https://www.amazon.com/Make-Your-Own-Pixel-Art/dp/1593278861. (Not an artist, just a programmer who has tried to make a few tiny pieces.) Uses aseprite.