Hi All!
1. I find PR works best with text books. These kinds of books tend to have summaries, introductions etc. Everything that info-hungry PR'ers love.
2. Re longer activation sessions. I've always got the impression from this forum and the PR book that 30 mins in each 'session' is enough. But i'll try it on the book i PR'd last night and see how it goes.
cheerio!
Nick 