Rottweiler training can be difficult, but if you let your dog know that you are the boss from the get go, it will go much easier. You see, most Rottweiler's by nature want to be "top dog" so you need to establish that you are the leader in order to have the ability to train him properly.
There are some things you can do to accomplish this. First you want to get your dog to roll over and expose his belly for rubbing frequently. For dogs, exposing their belly is very submissive so this will help establish you as leader. Another is to make sure you always go through any doorway first. Finally, be sure that when you have eye contact with your dog that you never look away first.