I believe this is sent on new signups:
https://forums.flightsimulator.com/t/welcome-to-the-public-forums/121637
Which does have a link to the “Forum Guide” subcategory. But there are a lot of topics in that, and I would think most users wouldn’t know what “Trust Levels” are. I don’t remember if “discobot” covers that with its tutorials.
@EuleIowa89, you should be able to post now as you have reached Trust Level 1 (TL1). 
When posting, assure you are in the one of the subcategories off of the main root category. I do agree that this should be mentioned when first joining the forum as we get a lot of questions about it.