Greetings Ryuuko,
I read the books first and later listened to the tapes. I was already having some random surprise explorations after the 3rd book so I can't say if read-first/play CD later is the most effective way, but it works for me. Some people try the tapes, then go back to just the AKGbook because they like to be able to time the intervals themselves rather than wait for the tape to speak up again.
(There are pros and cons to both ways.)
The tapes are very similiar to the exercises in the book, with the added benefit of Bruce's calm and caring tones, and the lack of anxiety that a reader-only faces in trying to get back to the right paragraph, which sort of breaks the mood.
Don't be concerned about the differences between phasing and OB and directed imagination. Phasing usually happens as a short cut to the other two after you get a sense of what feeling ('energy signature') will take you into afterlife levels. Directed imagination is the safest, surest, most effective way to get there.
I've seen people in libraries with 'do not disturb' signs taped to their backs, but I suppose that custom varies from area to area. Will you have access to a music or AV library with listening rooms/carrels? Those might be more private.
Uninterrupted seated meditation will take you to the Afterlife, but experience is usually required for 'on-the-hoof' experiences such as Recoverer describes, where he's called to do retrievals while washing dishes, etc. (You go, Recover-guy!
)
The vibes you've felt are loosening the connections so they are a sign of progressing--congratulations !
Have you asked for Helpers to aid you? Whether you consder them your own undiscovered higher powers or slightly separate entitites, they like to be involved and appreciated. Trust helps over-come any bits of fear of the unknown and their assistance is helpful in establishing this trust. You will not be alone but they like to know that you acknowledge them. It helps puts you in synch with a whole assortment of helpers you'll be meeting as you go and gets you used to sensing energy signatures, another skill that grows more useful the more active you get with this.
Perhaps you'll even find a way to relate consciouness Studies/ Afterlife to some field of study offered at school. More and more people are doing so.
Enjoy your new beginnings!
Bets