Adding Attachments and Images
Click on the "Attachments" tab and then the "Browse" button. Select the file you want to upload and click the Open button. Click the "File Upload" button and the file is uploaded to your wiki. When you view the page there will be a large link that says "This page has attachments." Clicking on that link will take you to the attachments page, where the file is available as a link. You can either view or download the file from here.
To display images on a page use the same process. On the image link right click and select "Copy link location". This will save the URL of the image to your clipboard. Then use the process for creating a link by writing a left bracket, typing Cntl-V to paste the URL, and then a right bracket. [URL]