Looks like some King's Indian Attack, minus the Attack. I would play d3 here, planning towards an e4 push to control something, at least.
What to do after this opening?

See (for example) http://www.365chess.com/opening.php?m=9&n=575&ms=Nf3.d5.g3.c5.Bg2.Nc6.O-O.Nf6&ns=1.85.47.86.154.175.495.575 for some more specific move orders.
Try and ignore Black's moves. I am just wondering the possible ways i can follow:
1.g3 2.Bg2 3.Nf3 4.0-0.
Thank you for your help