Level skip for first five levels: On ther first level, find the sunflower balloon, there is a ledge there, use it if you can to jump past the balloon and hit the opposing wall. You'll then see a block which you need to jump on and move to the top left of the screen. When you get above the top, press up and you should get to a secret room with a Warp-Matic Machine. This will allow you to jump to levels 2, 3, 4, and 5.
Other Level Passwords Try these level passwords to get quick access to levels 8 and 15 Level 8: Balloon, 2-Up, Star, Moon, 1-Up Level 15: 2-Up, Star, Moon, 1-Up, Balloon