Inner Awareness is one of the most important, actually, scratch that, it IS the most important aspect in energy work. As to why? It involves feeling your onw energy and such, so if you do not practice such, and understand it, how the hell do you expect to do energy work at all in the first place?
Well then, lets get started... First off, I want you to begin meditating using the basic method that i taught you in the first lesson, of course, you can technically use any method you wish but I am building up on that one as it's the easiest to do and understand. Next, what you want to start doing after that is to begin examining one part of your body mentally, like, say your hand, feel out everything in it, every sensation, each sensation you get from said hand, determine what it is, if you know it, then put that in the back of your head.
Slowly start expanding that up your arm, then down your toros, just begin to identify every sensation you feel until you do it to your whole energy system, continue going on as well. Feel it all, warm, cold, whatever it is.
Once you get to a point, you should start noticing something peculiar. -Sensations that you don't know how to explain, this'll generally start off with some basic things, maybe even mundane still, but as time goes on, you should start feeling more extremeties.
Maybe you'll start feeling vibrations, prickling, unexplainable temperature changes, etc. Once you do, and it can't be mundane, and you WILL know if it's mundane or not once you feel it, congrats, you have felt something that isn't physical.
Next, you continue this ever day for 20-30 minutes or however long you feel, eventually you'll start noticing sensations that you can manipulate, like, vibrations, etc. Technically, you should notice it the first time, vibrations, liquid, gas, whatever it is, flowing through you.
That, is your energy. Get to know it well, try to play with it, etc, As you'll need to know it well.