A few favorite stops around the Atari and retro computing web — emulation, programming, history and archives.
Tinkernut.com » How To Make An Atari Game
This is by far the best video of an Atari 2600 game being produced. Step by step and very informative. If you are new to Atari 2600 programming, be sure and check this one out! Uses Visual Batari Basic (Visual bB).
Virtual Apple ][
An Apple ][ site with over 1400 games in an online emulator. Includes screenshots, game information, manuals, walkthroughs and other items of interest. Many of the games on this site were widely used in schools throughout the US and Canada in the 1970's to 1990's.
AtariArchives.org
Archiving vintage computer books, information, and software. This is one of the best archives on the internet for Atari related books and magazines. Great stuff for the beginning Atari programmer.
Armchair Arcade
Chronicling the Complete History of Videogames and Computers. If it is video games, and news, it is on this site!
AtariAge — Have You Played Atari Today?
This site has all kinds of items related to Atari game consoles on it. News, packaging, and all kinds of other curio related to the 2600, 5200, and 7800 as well as Lynx and Jaguar.
Atari History Museum
This is one of the best and most thorough sites dealing only with the history of the Atari machines. Everything related to the hardware, release dates, and even a ton of things one never knew Atari made are here.
Javatari Emulator
This is the home of the Javatari Emulator and to the author Paulo Peccin. Well worth checking out!