Http://Makepixelart.com. By the end of the book, you'll be creating art far beyond what's possible on paper! First, turn the grid on by opening the edit menu and enabling the show grid option.
Pixel art is undoubtedly the best pixel art maker by design enthusiasts and game creators. Copies the color of the pixel you select for you to reuse. Anything that lets you place squares on a grid is a potential pixel editor.