I joined USCCW a few years ago after reading their magazine. Back then, that was the only real benefit IMHO.
The problem now is that the membership MUST come with their self-defense insurance plan, which quadrupled the membership price!!
All I want is the magazine, darn it!
There are many, many articles available with a membership, including on-line access to all the back issues of their magazine.
You will not find a lot of support for open carry there, just FYI. It IS a CC organization.