2nd Annotated Game

Hello, this is my second annotated game. I play a 20 min game, its my 2nd game I've played in the standard time section. So my rating jumped up quickly from the first.

I have no idea what the opening, white fianchettoed his bishop. I have no idea what the best reply to that is, so I tried a sort of two knights defence, or somthing like that. I wouldnt be surprised if the name is wrong, Im not au fait with openings.

Here it is:

Thankyou, your comment really helped. In my latest game took notice of it, and I won it due to a combination of checking my moves, and aggressive play. I'm not going to post it because I really need to start posting some draws or losses. 

Thankyou :)