There are a couple other forums, one of them namely being www.alaska4x4network.com
, that a lot of the locals hang out on. I mostly come to JF for keeping up on some ZJ tech.
As for finding trails, get with the clubs. In Anchorage, we have Alaska Extreme Fourwheelers (AKX), and our sister-club in the MatSu Valley is Too Broke To Play (2B2P). In Fairbanks, I know the Fairbanks Offroad Lions are gaining in popularity, and there's Arctic Offroad. There's a long-time loose group of guys down on the Kenai that have gone back and forth with formal club organization and meetings; generally this group is the same as the Kenai Krazies, which does as much snowmachining as wheeling. In Kodiak there's Emerald Island Offroad.
Here's my Scrambler:
My wife's former 4.0 ZJ:
I'm in the process of moving all the Iceland stuff over to her new-to-us '98 5.9L ZJ.