To insert an image.
Go to the images page, here. Click on "Upload Image" and follow the instructions. It's pretty clear. Once the image is loaded, Your screen will have a paragraph of text. Contained in that text will be some text like image:filename.jpg contained within square brackets [[]]. That information, with the brackets, is what you need to paste into your article.
Most of the Wiki I learned, I got from editing the articles of others. find an article that has something you want to do, click "Edit" and see how it was done.
