Crossfit is an excellent cross-training website that provides a wealth of fitness information including a workout of the day. Many of the workouts will kick your butt.
John Stone is a guy that transformed his physique in only a few months by a combination of healthy meal planning , cardio workouts, and weight training. His story is very motivating. There is a plethora of sites out there that give stories that are too good to be true, but I believe his story is legit.
If you supplement your diet with protein shakes, I recommend At Large Nutrition.