Click on the 'fanfiction' option on the top of the page.
On the left side of the screen it will have some options, under the user menu click the 'my stories' option. Then click 'Add new story' then you will fill out the title, summary and first chapter.
Once your story is set up go back to the 'my stories' option and your new story should be listed, next to it there will be a few things to choose. Such as: Edit, Add chapter, reviews, delete.
To add a new chapter simply click 'Add chapter'.
That's it..I think. Hope I helped
