Here's the deal.....you need to burn more calories on a daily basis than you're taking in. But you're going to need some good carbs to burn so you don't lose muscle mass. (Whole grain bread, brown rice, broccoli, eggs). But you're only going to want to make these about a 1/3 of each meal. I suggest a carb free dinner. And never go to bed on a full stomach.
Honestly, different things work for different people. A lot of making this happen is finding what works best for you and stick with it. Listen to your body. You can supplement with a fat burner as well, or something to curb your appetite throughout the day (Lipo-6), but you'll still need cardio. Weight training will also help. Muscle burns fat, plain and simple. Use lighter weight with higher repetitions to get a leaner look. Heavy weight, low reps, will build mass.
Check out some of the bodybuilding magazines as well. TONS of good articles about different techniques. I've experimented with a lot of different supplements and routines, so if you have any other questions, feel free to ask. Good luck, brother!!