What is the best way to leave my husband?

My husband and I have been married for almost two years, and I am completely miserable with him. He has refused conseling and is unwilling to make a change for the better. I need a good job and a new car before I can leave him. The divorce should be uncontested, so all I need to do is get the papers. What would be my best way going about this?

How long will it take for the divorce to be finalized so I can move on?
Any suggestions for online services to get the papers?