Here are some threads that should help you. You can also do a search yourself to find more information and training tips:
http://www.rottweiler.net/forums/pup...leash+training http://www.rottweiler.net/forums/pup...leash+training http://www.rottweiler.net/forums/tra...leash+training http://www.rottweiler.net/forums/pup...leash+training
As far as having two puppies at one time, you have your work cut out for you. Please read the following and then decide if you REALLY want to keep two of them and be aware of the pitfalls of doing so if you are basically an inexperienced owner:
http://www.rottweiler.net/forums/pol...pies-once.html
Please do a search on "Two Puppies" and find even more information on this subject. I can only assume that you bought these puppies from a breeder that just raises them for money. Most, if not all, ethical breeders, would not place two puppies in the same household, knowing the problems that situation can create.
Read on here, get your puppies separated, make them bond to you instead of each other and ask a lot of questions. You need to be fully aware of how to train and raise them properly in order to defray any potential problems that can arise later on.
Are they both girls, both boys or one of each? (Your answer to this will bring a lot of other information to you from us).