Greetings Blackcat!
There are many books on this subject. One is called "Develop your Psychic Skills" (at least, I think so...) by Enid Hoffman. The author, I believe, is now deceased but when I knew her, she was a marvelous teacher! I helped her publish the first draft of this book back in the sixties. But here is a small start on your quest....I wish you luck! (IMG:
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PS try www.insight-books.com
she also did a few books on Huna
Enid was in her late 60's when I knew her over thirty years ago but it wouldn't surprise me in the least if she was still around! What a wonderful teacher!