I've been trying to decipher your avatar and it looks to me that it's your OC pony? Please tell me your're a brony! :D
But anyways, welcome aboard, yo! Wonderful to see you here. :3 There are a few tips I'd give you to start and you can always use them whenever you are online. :) One is: don't rush. Because when you rush, you'll miss on the importance of the discussion and you'll end up spamming the forum. And that my friend, you'll get in trouble by the staff for that. Secondly, if you feel lost around the forum (because it's understandable that PC is a large place) don't hesitate to contact the staff in bold colored names. Staff members like Cirno, TwilightBlade, Went, and Ausaudriel are examples of staff members that are always on standby if you need any help. Thirdly, Join the discussions! If you like the anime, or have an interest in ROM Hacking, join them! No matter how experienced you are, people will accept you for who you are.
And lastly and most importantly: have. fun.
Hopefully that helps you, and I wish you the best! Stick around and have a wonderful time here! See ya!