Also, don't try to learn at Yahoo or the other game sites. People set asinine time limits for playing a card.
The person who created the version I use said anyone who's over .500 against the computer after 100 games should write him. I think he may have an inflated opinion because I'm running above .500, and I'm sure expert players could do the same. I even have a small lead in total points, and that's after getting absolutely pasted when I was learning the game.