I just recently discovered XF and decided to use it to for our brand new private membership forum that consists in about 600 members. I will not be importing anything from a previous forum. Before I go through the whole install and setup process, I was just wondering if anyone has advice for starting a new private forum? Is it possible to create an XF forum that is completely private, where the only thing a guest (non-member) can see is a login screen? Where the categories and posts are completely hidden? I was also wondering if I could do one of the following: a) Completely turn off the registration process and import a user membership list of usernames/passwords/emails? Maybe a CSV file import or something like that? OR... b) Send out invitations and have only the invitees be allowed to register. Basically I want a closed-garden approach where only members can register and view the forum. Any advice or pointers?