probability-discrete randon variables, pmfs

I've never even covered this stuff before guys :S The below numbers where in a table but I couldnt recreate it on here :(, hope you clever people can figure it out :)

Discrete random variables X and Y have joint probability mass function:

Y=0 & X=0 =>0.2

Y=1 & X=0 =>0.2

Y=2 & X=0 =>0.1

Y=0 & X=1 =>0.2

Y=1 & X=1 =>0.3

Y=2 & X=1 =>0.0

(a) Find the marginal means and variances of both X and Y .

(b) Find the conditional mean of Y given X = 1.

(c) Find the correlation between X and Y