I have quite a few unwanted cs go skins in my steam inventory. What to do with them?

Sell these items on the steam trading platform.

There are some people here who know a lot about online shopping, so the question I have is a very good one that I don't have an answer for. A while back I decided to try to buy myself some skins for Counter strike global offensive. Not sure where to do it, but friends recommend this page here. Had you ever heard anything about it?