Introductory Videos / Presentations The Atari 2600 Video Computer System: The Ultimate Talk Sven Oliver ('SvOlli') Moll:on the history, the hardware and how to write programs Atari 2600 Homebrew Development Darrell Spice Jr at  2013 Portland Retro Gaming Expo    General Tutorials/Documentation (Assembly) Stella Programmer's Guide (pdf) - Stella Programmer's Guide (html) The most canonical document for programming the Atari 2600 Let's Make a Game