I accidentally soldered a switch on crooked. I got the switch off the board but i'm having trouble cleaning out the holes so i can put a new switch in.
Can this switch footprint be saved after being clogged with solder and melted a little, or should i try to get the other switches off and start over on a new board?
And what's the best way to desolder these switches if i have to remove the rest?
Certainly. This is a very common need with working on PCBs. You have two choices:
Solder wick
Manual vacuum desoldering tool
If you end up doing this a lot there are also very nice (and expensive) powered vacuum desoldering stations.
Regardless of which you choose, make sure to practice on a board you don't care about. It takes some time to learn how much heat to apply, angles, etc. You don't want to destroy your good board learning.