Hi Big Dave.
It is quite tricky to get the body to simultaneously lose fat and gain muscle. They are at opposite ends of the scale. Many people believe that it is best to lose the fat first, an THEN gain muscle.
I recently lost over 30lbs of fat in less than three months. I did it with this -
http://www.amazon.co.uk/exec/obidos/...002885-2709222
Building muscle mass is not necessarily the best way to gain strength but, if the mass is your goal, then here is a great place to start -
www.hardgainer.com
Exercising without equipment is a little trickier, but using the imagination and common sense can help a lot. These guys are incredible -
www.crossfit.com
Good luck mate!