in my opinion your moving way to fast. you need to run before you do anything. all the pot you smoked is sitting in your lungs right now. and as soon as you do something cardio its going to feel like butterbean is sitting on your chest. you need to drink alot of water and run alot. then after alot of cardio you need to find a gym. show the trainers that you really want to learn and heed what they are teaching. after you have a general idea of what go's on ask your trainer these questions.