Let T= $\displaystyle \sum ln(1+x_i) $

Find the mean and variance of T.

some other info: $\displaystyle X_1,X_2....X_n$ are iid rv with density function $\displaystyle f(x,h)= h(1+x) ^\ (-h-1) $, x>=0 and h>0, h is an unknown variable

I'm not really sure how to approach this problem

Any help will be appreciated

Thanks in advance