1. Poker is the most common free game on the internet. Any poker site or AOL and Facebook have versions.
2. Blackjack can be played for free at most online casinos.
3. Free slots are everywhere online. Online casinos have plenty of variations.
4. Video poker of many different varieties can be found quite easily at online casinos like BodogLife.com.
5. Roulette4fun.com has free roulette games to play and learn on, plus info and history on the game.
6. Free craps games are available at freecasinogames.com and most online casinos.
7. You can play free bingo on AOL. No download required with the flash version.
8. You can play baccarat at 777.com and get info on the game as well.
9. Caribbean Poker can also be found at 777.com, and articles on how to play are available for your reading pleasure.
10. Keno Play Free has a free keno game to play without download.