Bridge Base Online offers six sample deals at each of the five Levels. Try it for yourself! Log in to BBO, and click on "Other Bridge Activities". Near the bottom of the list is Bridge Master 2000. Click your preferred level and try the sample hands! You can purchase individual sets of hands on Bridge Base for $10.00 per 30 hands, and you can buy the whole program here for $59.95. The price tag may look steep, but I promise it's worth it. My suggestion would be to play the sample hands on BBO and find your level, then buy two sets of that level and one of the level above that. Then practice!
These hands are set up to reward the best lines of play. If you play it and fail, you can try again as many times as you need. Be warned-- the lie of the cards that wreck your first try may not be the same lie when you try again! If you try a different sub-par line of play, you'll get punished for that too.
My favorite deal from the samples on BBO is Level Five, deal 4:
Once South finds out that North holds the black aces, he bounces into 7D. The king of spades is led, and it's your play. I'll post the full play in the Comments.