Help with lambda calculus.

Help with the set up of the problem and the steps on how to solve it. Im not sure where to start or what to do

I. (10 points) Evaluate the following expressions: (CAx.y. (y x) p.. p) .i) (a) (2 points) (c) (2 points) (e) (2 points) 1.1 (Xh.CCa M. (f a) h) h) . (f f)) (((M..g . M. (f (g x)) As. (s s)) Xa.Xb . b) M.y.x)