Recommend resources to read up on bodybuilding?

Causalien

Besides reddit's fitnees sub and here, any other good forum or site where I can go to gain more knowledge on body building?

usmcmp

It kind of depends. Some of the gurus specialize in strength, some specialize in size, some in simply being aesthetic, some more on nutrition. I don't know of any one site I would use since most of them have tons of garbage and broscience, I'd look into following one of the "gurus".

John Meadows
Jason Theobald
Alan Aragon
George Farah
Chris Aceto
Hany Rambod
Charles Peloquin
Dave Palumbo
Kevin McDowell
Ken 'Skip' Hill
Austin Stout
Jack LaLanne
Phil Provenzano
Chris Aceto
Bret Contreras
Charles Glass
Dorian Yates
Hany Rambod
Layne Norton

*Disclaimer: Some of them know far more about how to work with steroid users, so take some of it with a grain of salt. Some of them still promote broscience (but some of it still works). There are many I'm sure I forgot.

mattyc772014

Great list above. One more to throw in.
Brad Schoenfeld