American Society for Microbiology (ASM) is the oldest and real treasure for microbiologist. It is impossible to cover everything about ASM in this small post.
Website contains many valuable things along with journals it has Journal of Microbiology & Biology Education.Microbiology for public, Microbe magazine, amazing collection of books etc.
It is better if you have a tour of the informative website, but to remember you some of the crucial menus in the website here are some snapshots taken just to remind you to visit this for sure.
3) Microbiology for Public
4) Journals by ASM
5) Journal of Microbiology & Biology Education