54Rigger is giving you really good advice. Try not to expect too much at first. Everybody starts by being really slow and frustrated. It is normal.
I would add this: The only thing that will stop you from obtaining your goal is to push yourself so much that you get too frustrated and quit. You have to keep it to a low boil of frustration. Think of the old story of the tortoise and the hare. A new guitarist should try to be a tortoise, slow and steady.
Hope that helps.
Jon