If it the nachi test for roofing there is a PDF student handbook at the beginning of the course you can save on your PC. It has all the answers to the questions in it. The videos are hard to follow for me. Hope it helps
Hector, did you make a friend in your area yet?
It is one of the best ways to get connected with your education.
If you still have any problems by the end of the day, send me your phone number and not on the message board.
I will call you and get you up to speed on Roofing and the mysteries of venting and insulation.