Welcome to FeralHeart, DJ! I love the username by the way lmao Great to hear you're wanting to stay active in the community, that's awesome.
As stated above, joining groups and roleplaying with others is a fun way to make friends here. The mate centers are fun ways you can either find a mate for your character, or just socialize and have fun.
In The Grounds, you can join in conversations that are being had, add your two cents on the topic and or just be a listening ear until you have something you want to say. Really it's nothing to stress over, it will come naturally. Just put yourself out there and I'm sure you'll gather a fine circle of friends~ If I ever see you online, I'll definitely come over and say hey =) Don't worry about being "that person". Just do what you do best and be yourself.
Helo, DjJJHamdog!
Welcome back to FeralHeart, my friend. You will surely meet lots of fun people, The Grounds is the hotspot and that's where you should find most fluffs. Most of the floofs have answered your questions but I wish you the best of luck and have fun. c: