So.. how do i practice these skills?
Reading the CRV manual is a good place to start. Also look up the "Stargate Project" somewhere on the internet. I don't think you want to practice how to AOL, ha ha ha. If you are trying to achieve greater accuracy in your predictions/feelings/events external of yourself, then simply getting to know yourself and questioning your beliefs is a good place to start. In order to "destroy", for a lack of a better word, the sub-c blocks, you first have to understand why they are set in the first place. An example would be is that you can't AP. You were raised as a catholic and have been told multiple times that demons exist and can possess people. APing can be seen as the soul leaving the body for some people, so let's say you unconsciously made the same connection. Therefore if your body is empty it could then potentially mean anybody can take over the body, since you don't know squat about APing. Every time you try to AP something scary happens or you have some real negative feelings going on. In this situation you have to take into account your history and the influences that took part of your life, which would be Catholicism. Then you really need to crack down on it and find out what's truly bothering you, which if you are successful you find out is just the concept of demons.
I heard this one method that offers a temporary solution, however I haven't heard much of it. Each time you feel stumped, ie trying to AP since you have so many thoughts going on and feelings, just gently tell yourself that you will look over the feelings and thoughts at another time, but right now you are doing something important. Has not done squat for me, but maybe it might help you.