I have learned so much from being a part of this website. If you enjoy writing this is a "must have". The reason is you get feedback for the stories and poems that you write. Or if you are writing a book you will get feedback for every chapter you write. This feedback, for me, is invaluable. Knowing what more experienced authors think of my work has helped me greatly. I'm a much better writer since I joined.
FanStory has helped many authors (including friends I have met through the site) go on to be published. The feedback is always helpful and friendly. I have learned more from FanStory then I have from any other source (including college!). The site also has writing contests and other features that really are beneficial to anyone looking to improve their writing skills.