The Gothic Charm School by Jillian Venters is a guide for goths. With goth do's and don'ts to sections for your parents to see that you are not some depressed person. Even explanations of different types of goths, and where goth can work. No you Hot Topic isn't your only option, you can get a "real" job.
Go grab a copy at Barnes and Nobles, Amazon, or just check your community book store. This book is an essential for all goths. It explains the scene particularly well for the new goths and it helps your family and friends understand what you are going through.
There is also a website. Check it out here: Gothic Charm School
And if you want a visual, here is a video.
Oh, darlings you will all love Jillian Venters or The Lady of the Manners like most goths do (like I do).
Watch her videos, get her book, and go to her website. Hmm, NOTE TO SELF: get a top hat.