1) Die whenever possible, unless you are enjoying the level.
2) If you don't know how to die, just do the opposite of what the level seems to be telling you.
3) Think about the title of the level, and either do what is says, or do the opposite of what it says.
4) Finally, just mess around until you pass the level.

And remember, if you are reading a boring guide to tell you how to complete these simple and enjoyable levels, you are thinking too hard, and the levels have probably become neither simple nor enjoyable.