Hey welcome back!
Some things have changed on this site since you left, so while I am sure you remember some of the basics, here are some helpful links.
Shian's Guide to Successful Trading is always a good place to start if you are thinking about trading. The
CS Trade Rules gives you information about the etiquette of the trading board. On Jan. 2019 there was a
Big Rarity Update, so you might want to check the forum out.
Since you said that you are interested in roleplay, here is the
Roleplay Forum.
If you already know this information feel free to skip this, but it might be a nice refresher course. The
Newbie Guide & Index is always a good place to start to learn some of the in's and outs of CS. The
The General Helpers is a group of CS staff that know a lot about how CS works.
The Must-Read Topics For Newbies is a great place to get a lot of the rules of the site and has links to most of the rules as well as the frequently asked questions. You can submit a
help ticket to directly contact the staff if there is something that you would like privately resolved. The
FAQ is well what it sounds like, a place that the CS staff consolidated the most frequently asked questions. Finally,
The Rules for the Site and Forum are the general forum rules
Monthly Adoptions is where you adopt your monthly pets. Another great forum is the
CS Free Adoptions. Players here are giving away pets for free to other players. The
"Pound" and "Lost and Found" is a place for players to adopt pets and items for free.
I hope you are enjoying your return to CS and if you have any questions at all do not hesitate to pm me!