If you want to get bigger, I'll give you the same advice i give on every thread of this nature: eat protein and carbos, and eat a lot.
Do multi-joint lifts with freeweights.
Good lifts include (if you don't know what they are PM me) in order of importance:
[lower]
Squats
dead lifts
[upper]
Dips
Pullups/pull-downs
horizontal row/standing row
chest press/shoulder press
If you want big fat arms, add curls and tricep extensions.