Contrary to popular belief, steady state activity is NOT the best method for fat loss, in fact, its counterproductive....http://www.mikementzer.com/aerobic.htmlhttp://baye.com/you-dont-know-hit-2/
A properly constructed and managed resistance training program will severe ALL your (or anyones) needs, ie stimulate growth, set up a better hormonal environment for fat loss, increase bone density, improve flexibility, improve cardio function etc... all in one shot.
Train intense, brief and infrequently....frequency depends on the individuals stress tolerance and recovery ability, allow enough time for compensation (recovery), but ALSO, over compensation (growth ), its a two phase process...
Focus more on compound movements, these movements are better simulators, the odd isolation movement is fine for stress management, and targeted stimulation.
Vary your workouts, dont just do the same thing workout after workout, (see the adaptation and variation thread i wrote)...
Diet wise, i recommend intermittent fasting, it improve's recovery, it allows the body to toxic, and it will set up a better fat loss environment.
Do your research, don't take anything on faith, use logic and reason as your guide, i would recommend you read some of Mike Mentzers work...
Hope this helps