At some moments you can think, "What do I need to do?". Well - there is always some things to do.
The first is, just start reading a random page. Look at the page for keywords as stone. Sometimes they arent marked, so they are just plain text: stone. You only have to mark a keyword one time on a page. If you see this, you can go to edit mode and enclose the word with 2 [ and 2 ]. Sometimes when you do this and have editted the page this is red. That means this page isnt there. Do you know something about the thing? Write te page. And if you want to make it perfect, support it with pictures.
You can also just check for red links.
Also, we need categories. Some pages dont have categories - make a new category or add them. Its extremely helpfull to navigate like this.