bike grease got on my wall. best way to get it off? white paint on drywall. 
black bike grease.

whoops.

what are you tips and tricks for getting it off the wall/paint
Probably best to start with something mild and work to more harsh until you find something that works. It's probably also best to test in a non-conspicuous area on the same wall just in case something unexpected happens. You can start with just soap and water, and see how that does.Then try dish soap. If that doesn't work, you could try the magic eraser things. They do sell generic ones which people claim to work (never tried them) which could save money if you need to do this a lot. I think these actually remove a thin layer of paint, so you should probably be careful with these.