I got this dent on the right hand side from... accually, i don't wanna say but how do you fix it, can i use a hammer and blk of wood from the inside?

 

Given the location of the dent, it would be very hard to get out and look right. It looks like it is on the body line. I would cut the wood so it would fit in there better. And dont hit to hard, it could dent the other way. I just hope you didn't strech the metal. Then you would either need a new one, body plastic, or have a shop do it.