I bought my first pitbull, he is 7 months old now and I want to know, what tipes of training can I do with him. The only problem is, that we live in flat. Like all pitbull owners, I want, that my pitbull will be strong and muscular, but not aggressive. Maybe anyone can give me some advices, how to train my pitbull in flat? I just need to know what equipments we need for training.