Need help locating....

I've read volumes of threads on the 7.3 and have learned an immense amount of diesel service stuff in the past months. But I still find a lot of discussions leave me in the dust because of lack of information to put the whole picture together. The glossary of meanings was helpful but what would really help is drawing or pics of locations of everything being talked about, whether is electronics, engine, suspension, etc..
For example, I hear alot about HPOP reservoir but do not know where it is. So is there somewhere a newby can look to find physical locations so as to put words to parts?

Tx,
Steve