Hi,

I used to compete at a very high level in Europe. When my trainers weren't there, I sometimes replaced them. What I used to preach to newbs, is start with the very basics and that is the jab and the cross. Focus on those, before you ever throw a hook or uppercut.

Besides that, I assume that your cardio is already ''normal''. If not, do some cardio training before you start boxing, it will benefit you, I will promise!