The Hero and the bookworm

our main character finds himself transported to a fantasy world. sounds familiar, right? well, our MC, isnt the hero. he just got dragged along for the ride. to make things worse, the gods cant send him back. so they decide, while our MC is in transit, to give him access to the hero system, with a class perfect for him. can our MC survive the world that he has no place in? will he help the hero? or will he do his own thing? this is my first novel. so be brutal, but constructive. if you think its bad, tell me why, and give me suggestions on how to improve. thanks