Welcome to Subeta! There's some great guides below that might help you out, but if you have any questions, feel free to ask c:

If you have purchased CSC and want to exchange it for sP, you can easily sell via the Advertising forums or on the shop search :) CSC is pretty easy to sell so it wouldn't be an issue.

Useful Links:

What to do on Subeta? FAQ Useful general information for newbies Finding friends (Chit Chat) SubetaLodge (Offsite item database, pet colours etc.)