Classic: Rate the apparent credibility of these resources on training and nutrition

the Patterson and Frazier for sure, I find that if you have the determination all you need are the basics to build a really good workout regimen, and if you already have some experience in strength and conditioning and actually working out even better

the Olympic one

#4 ISST
#5 ringside and training principles

I would put Bruce Lee books and videos of young Tyson working out and sparring above a lot of that list

 

Boxing exists for drunks to throw money at each other. Anybody who tells you different is working an angle.