FYI, such requests belong in the
bugs and suggestions part of the forum. I have done this myself
once.
New members must be approved by the staff before they can access the NSFW section. You can contact the staff either by directly sending them a PM, or by reporting your post and asking them to approve your friend. This will speed up the process.
Also, please send your friend to the
introduction thread. It isn't required, but it is nice to see newbies post there.