If you are allowed to edit pages in this Site, simply click on edit button at the bottom of the page. This will open an editor.
To create a link to a new page, use syntax: [[[new page name]]] or [[[new page name | text to display]]]. Follow the link to create a new page and instantly edit it!
Please visit Documentation pages to learn more.
The most basic level of layout help is here:
http://www.wikidot.com/doc:wiki-syntax
But these are fun too:
http://snippets.wikidot.com/
Dont forget you can access side and top navigation frames for editing with:
http://waterwars.wikidot.com/nav:top
http://waterwars.wikidot.com/nav:side