If you have just registered, you may wonder why you cannot post yet. This is because an admin person needs to approve your registration. Before they do that, they will send you an email asking for a bit of personal information (what camera do you like, what photography do you do etc.) You need to look out for this email and respond to it - it may go into junk/spam so check there.
If we don't hear back from you, your account will never be activated and will eventually be disabled.
We do this to avoid being spammed and trolled. So far, it's worked OK.
Alan