no a rottwieler can be a very good dog and has an easy coat. if you have a more specific question to answer we would be better able to help you. dog care is a very vast subject. a good book i would recommend is dogs for dummies.
yes dana is right, being the dog owner and how you handle can make or break a rottweiler. socialization is extremly important. especially in first four months of life. dogs as pups get hard wired to what they will be comfortable with. so if a dog has never seen another dog until it is older their can be problems. good point dana
Rottweilers can be very sweet! People who don't know how to properly train and socialize any dog but especially rotties can "ruin" them, those are the kind of dogs you see on the news.
I have known very sweet rotties, the reason they were so sweet is because their owners trained them and socialized them from puppy hood and throughout their lives.
My tip is, is to read as much books on dogs in general but especially rotties. Take your pup to a puppy kindergarten. Take your pup to pet stores to meet other dogs and people. Just socialize your pup as much as possible to many different things....people of all ages, other dogs of different sizes, etc.
Remeber that you should start puppy classes as soon as possible, and train him to do things you would want an adult dog to do. A little puppy is much easier to handle than a huge muscular dog. If you don't want a huge rotti on the couch than start when hes young, (so he doesn't know what hes missing) Decide now where he will sleep, where/when he will eat, when he will be walked and so on. Sometimes puppies who are strictly raised in the house and yard, can become hyper. Walk him regularly and let him meet lots of people, see different places. The more he does while hes very young the less he will be fazed by things like people on the street or other dogs.This will help ensure he becomes a calm, easy going dog. Its really sad to see a dog strictly a back yard dog.
With Rotties, you need to make sure they NEVER get away with anything. Do not discipline one time for something and the next day let it go. Consistency is the key with big breeds like rotties and pits. I had a rottie mix dog once and she was the best dog I have ever had. :)