Welcome to the Discovery Freelancer Server.
First and most important thing is to read forum and server rules, read guild about role play if its needed and take your first tour in space.
Server Angels are there to help new people with Roll Play, rules and everything that could be a problem to new player regarding disco server and it play. So, if you are feeling stuck... Just throw me an PM and I'll help you, same like every angel on this server.
Oh, and I've seen your trader in space twice too. I would direct you to have a closer read of the Ageira Technologies ID in order to explain why a certain Ageira Security ship wasn't very happy with your Kusarian buddy hauling Gate/Lane Parts...;)
But, forgive and forget, since you were obviously a new player. Should you have any questions related to Ageira trade or Ageira in general, feel free to contact me over Skype or by Personal Message.
Re: Signatures and avatars. Most people find or make their own avatars. Signatures are usually a bit more complicated: either people make their own, or pay (with game credits) other people to make them.
Popular programs for this are ones like Photoshop and Paint.NET.