You can read the whole thing here:
http://books.google.com/books?id=6To...age&q=&f=false

But I really don't advise you to read it on a computer-screen... this one is bound to be read with a cup of tea, a pair of slippers and a nice blanket over your legs- while you sit in your favourite chair - and listen to the nice sound of pages being turned one by one.

Thomas Campbell give the advice to read the book slowly. Let it all slip in a bit at a time. I took 3 months to finish it - but I had some other books on the subject of OBE's, (like William Buhlmans "Adventure beyond the body) to read in between My Big Toe-sessions. If you haven't read Robert Monroe's books they would really fit in nicely because they off course come from the same "school of thought" and use many of the same terms - but Monroes books are very much about direct interaction with Non-physical-reality.