I'm from southern LA as well and am also experiencing the same situation. So far I've only found the Gulf Coast Mycological Society as far as groups go in our area. They are going on a foray near Beaumont Tx in early Nov. might want to check them out. I'm sure they know more about what's going on in our area. I've been finding a decent amount of what I think are chanterelles and oyster mushrooms in the atchafalaya basin lately, though I still have some confusion on IDing. And I've also just learned that morels can be found in tunica hills in march, a place just north of Baton Rouge. I was surprised to find that out. Anyway, good luck. I know it's hard getting started around here.