Photrio Forums – Formerly APUG.org, this forum is bursting with knowledgeable darkroom folk:
https://www.photrio.com/forum/home
Unblinking Eye – This extremely helpful and informative site has been around forever:
Pacific Rim Camera Reference Library – a fantastic collection of historical photography sales and instructional literature.
https://www.pacificrimcamera.com/rl/rlrindex.htm
Transporting & Storing Film – Advice from Kodak
https://www.kodak.com/en/motion/page/transporting-storing-film
Pakon.au Forums – this brand new forum will hopefully gain a bit of traction and get Pakon scanner information into a searchable place: