Hello, I am very new to hvac and would like to pick your collective professional minds on what you consider to be the best book/guide/manual for troubleshooting. I have been in hvac school for only 4 weeks, but am lucky enough to have gotten on as a $10/hour helper with a great technician that runs service on residential and commercial. I am almost finished reading Refrigeration & Air Conditioning Technology...a great book that has given me a firm handle on components, laws, etc... But I am really disappointed in the AC troubleshooting section. I mean really--a 1300 page book with 17 pages dedicated to AC troubleshooting? I realize that no manual is a substitute for hands-on experience, but what would you recommend that I read/have on hand as a troubleshooting guide? Thank you in advance for any information.