The essays I've been writing about startups are going to be such a book. Most of the general advice I could give about investors, particularly, I've already given, in e.g.

http://paulgraham.com/fundraising.html

http://paulgraham.com/investors.html

http://paulgraham.com/startupfunding.html

Your Submarine essay on PR has been especially valuable advice. I hope it makes any folio/book.

It helped my tech-startup to gain the courage to spend a realistic amount on such a vital area.