Welcome to FaramirFiction's Wiki!
A Wiki is a type of content management system that allows all users to easily and quickly add and edit content, create links and new pages. The term "wiki" comes from the Hawaiian "wiki wiki", which means "quick" or "informal" - and that a wiki system certainly is: all you have to do to create a new page or link to an existing one, is put a word (or several words) in [[double square brackets]] (hence the logo).
All pages have their own discussion page (the 'talk' pages) where you can comment on the page's content; see the tabs at the top of your screen. There you'll also see a tab to edit the page. This is an essential part of the wiki way: all users can edit (almost) all pages; no one 'owns' a page. We trust you are all mature adults who respect one another's work, but even if we should be visited by a vandal, pages can be restored to their original state. That is what the history tab is for.
We hope however, that being able to edit and link will create a whole new level of interactivity. You might want to give just one option at the end of your chapter, and leave the other one to be filled in by whoever gets there first. Or maybe you want to enter a very long chapter without having to breaking it up into parts, and leave it to other users to edit in an option somewhere in the middle, in a place that best suits their needs. Perhaps you'd even like to create pages to provide background informations on (original) characters or locations, all easily linked to from your chapter and those of others. Artists are invited to join in by adding images.
It's all possible.