I’m sorry if this seems simple but I’m just curious where the Options is. (e.g. to change my signature)
Thanks (and sorry if it’s right in front of me). 
User cp is where you’d go; it’s in the orange bar at the top of every page. The left side has a line of things you can edit (signature, profile, password, etc.).
And some of those options are in the “Quick Links” menu in that same orange bar, towards the right.