New Image
If the image has not yet been uploaded, this is really simple. Click on the Embedded File button next to the Link button in the page editor. Upload the image in the dialog box and it will generate the code for you after clicking "Insert"
Existing Images
For images already in the wiki:
- Go to the File List page
- Search for your image
- Click "Open in Media Viewer"
- At the bottom right there is a button to "Share or embed this file". Click on that and the wikitext will be provided that can be copied onto a new page
