I am a very green HVAC technician. I recently graduated from a trade school, and now am out in the work place. We learned a whole lot in a book, but really did not get much hands on training. We learnt next to nothing about boilers, only book education on oil, very little trouble shooting on heat pumps. I am looking for some videos that may be able to help walk me through these things. Can anyone recommend where to go to get such videos, or where to buy such videos. Thanks a million.