It is not clear at all how to make a listing after signing up. I would create a big button that says "CREATE LISTING" like StackOverflow has for asking a quest

It is not clear at all how to make a listing after signing up. I would create a big button that says "CREATE LISTING" like StackOverflow has for asking a question Also, is there a way to add a category/request that one be added? There's no "Ruby" section and I was looking to post a listing.