The Blackjack Strategy Trainer
The Blackjack Strategy Trainer is a free blackjack game that teaches basic strategy while you play. You select the exact rules that you want, and the Strategy Coach will warn if you make plays that are not correct basic strategy. (You can also turn off the Coach if you prefer.)
If the game does not load, you may want to clear your browser cache and try again.
You should also disable any Popup Blocking software or toolbars you may have running.
iPhone, iPad, or Android user?
The Strategy Trainer is not compatible yet, but here is a great app that will work on your device: