what should I set the flaps to on landing?
For what aircraft? I just usually do full flaps on my landings.
Many aircraft use full flaps but I've been told that the Boeing 737 normally uses 30 degrees of flaps for landing. I routinely use flaps 20 for the FS C-172. Use the correct (Vref) Reference speed for whatever flap setting you use, this data can sometimes be hard to determine.