 This screencast walks through the basics of uploading images to Wikimedia Commons and adding them to Wikipedia articles. Take this article, for example. Secondary Lens. It's a photography topic that doesn't have any photos. Let's fix that. We'll use an original image I made. To add it to the article, we'll need to upload it to Wikimedia Commons. First things first, Wikimedia Commons is only for original works you made yourself, works by others that were explicitly released under a Wikipedia-compatible license, or works in the public domain that aren't covered by anyone's copyright. To upload a file, go to commons.wikimedia.org. Be sure to log in if you aren't already logged in. You'll use the same account you have on Wikipedia. To get started, go to the Upload Wizard by clicking the Upload File link on the left. The first page of the wizard is a comic featuring Puzzly, which goes over what is allowed on Commons and what isn't. At the bottom of the comic, click Next to get to the Upload page. Clicking Select a media file to donate will let you find a file on your computer to upload. Once it uploads, you're ready to continue on to the license release. If it's your own work, just put in your name or username, however you want to be credited when people use the image, and press Next. Now it's time for the title of the image and the description. For the title, put something concise, descriptive, and specific enough to differentiate it from similar images. For the description, add as much detail as you can. Where and how the image was made, what the subject is, and anything else a viewer might want to know about it. You can also add the image to one or more Wikimedia Commons categories. Try browsing similar images to find out what categories are appropriate. At this point, pressing Next will complete the upload, and the work should be available for use on Wikipedia. On the last page of the wizard, you'll find code for adding the work to a Wikipedia article and a URL for getting to the file page, where you can edit the description or upload newer versions of the file. You can copy the wiki code and paste it into the article, and then add a caption. The basic format for putting an image into an article is like this. Opening square brackets, then the name of the image file, then a pipe and the word thumb, which puts it into the standard thumbnail format, then another pipe, and then the caption, which should make clear the connection with the accompanying article text, and then two closing square brackets. Once you've added the image, put in an edit summary and save the page, and that's it. We've added a new image to Wikipedia. Thanks, bye!