"The Microbrewers Handbook" is a great read. Might put you off setting up though.
Another great resource is the IBD.
http://www.ibd.org.uk
They do professional brewing courses and exams for General Certificate in Brewing, Diploma and Masterbrewer. All City and Guilds accredited stuff.
Think the exams were about £190 and there is a five day course for £500. They are doing distance learning courses as well. Tim O'Rourke is the guy that runs the courses. PM me if you want his contact email.
Was going to do the exams and course last winter, but was a bit short of funds. I'm now building a 100L shiny, so it will have to be put off again.
Ollie