Built is giving some good info. I've lifted for years (with some serious gaps inbetween like the last 2 years!!) and have never gotten huge and I do heavy free weights and have worked with trainers. You get very firm and defined depending on diet. So don't worry or listen to the naysayers- my mom's the worst. Have fun and lift your heart out. It's a great stress release. You wont believe how it will sculpt your body.

Also, good supplementation is important. PR shakes, vitamins, and I try to always have a good protein shake after a workout a & add creatine to it. Creatine really helps get your muscles firm. Glutamine, omega-3 fatty acids, etc. There all important.

I have learned that I need carbs befor a workout or I get "heavy legs" and am very tired. Phat