This publication is from the Navy, it's comprehensive (so the document itself could be considered very advanced).
But it's safety summary beginning after the legalese portions, pages iii through vii were so interesting to me I think any diver should at least read them to get an idea of a baseline of safety. So enjoy:
https://www.navsea.navy.mil/Portals/103/Documents/SUPSALV/Diving/Dive Manual Rev 6 with Chg A.pdf
But it's safety summary beginning after the legalese portions, pages iii through vii were so interesting to me I think any diver should at least read them to get an idea of a baseline of safety. So enjoy:
https://www.navsea.navy.mil/Portals/103/Documents/SUPSALV/Diving/Dive Manual Rev 6 with Chg A.pdf