the U face is the easiest, you use your index finger for U and follow through with your middle finger for a U2. L and R don't really have finger tricks since your wrists are already there, you can do L and R with no finer tricks. D is kinda hard for me but easier for other people so I can't say anything about that. For F, you can use your right and left hands for both direction turns. For example, for F, you could fingertrick it with your right index finger or you left thumb. F' is the opposite, left index or right thumb. B is exactly the same but is not used alot in speedy algorithms. However, B can be fast if a R or L comes before it. For example, if you are doing the algorithm R B', instead of doing the R, and then moving your right hand back to do the B', you could follow through on the B' with your thumb after the R.
Hope it helps!