Editing
Editing articles, that is to say adding new and changing existing ones, is really easy in wiki's. First you need to register (don't forget to give a valid email) and you are set to start writing or iron typos out of old articles.
Secondly you need to see if the article already exists. That is done by writing the items name to the search box and hitting go. If it is a item, dont add the <glows> to the search as the search engine gets confused from < and >'s.
If there is no hit, then hit the 'create this page' link and get down to business.
Usually there is already an existing template for what you are going to add, a frame that is used for articles. E.g. Weapons, shields, armours, Items (things that are mainly used from inventory), projectiles, spells, skills, different quest types, societies and plants all have their own templates. Simply copy the frame from the appropriate templates page, paste it to the article and fill in the fields.
If an item increases a standard stat, for example Int or the skill Short blades, then it belongs to that category. Articles that reduce or hamper standard abilities are not included to categories since then you couldn't use them for searching beneficial things. At least one exception exists tho: Cursed item.
To include the article into a category add e.g. [[Category:Int]] or [[Category:Short blades]] to the bottom of the article.
After looking through the preview to be sure the article looks ok (which you should always do before saving), write what you did to summary field, hit save and you have contributed!
There are couple main guidelines how to fill those fields. In 'description' field you should not insert any additional rows, instead it should be all in one long row. The template automagically wordwraps them. When adding anything else and you need a line break, hit the enter once more, so that it has empty line between the two texts. This is the wiki 'languages' syntax to tell the wiki to that you want a real line break.