Hey again, Hisoka! You can add friends by clicking their username in the post (like my post right here) and then clicking "add to contacts." You can also go to a user's profile, click the "friends" tab, and then add them to your list that way. ^^
For future reference, though, remember to use the
Quick Questions & Answers thread for simpler questions like these - they'll be answered much faster if you use that thread! New Users / Welcome is a place for greeting new members rather than asking questions since we have an awesome section dedicated to questions/suggestions already. :3
Anyway, since this has been answered, I'll lock it now! You can always contact me or
Cid if you have more questions.