Help:Introduction to images with VisualEditor/3
Introduction
Adding images to Wikipedia
Uploading images
Wikimedia Commons
Inserting images
Worth a thousand words
Editing the details
What am I looking at?
Galleries
For large picture sets
Summary
Review of what you've learned

The commons has millions of images already uploaded. To insert an image, first click the section of page where you want the image to be placed.
Next, click the Template:Intcurrent menu and choose the "Template:Intcurrent" option to open a dialog box.
The dialog box displays an initial set of suggestion images from Wikimedia Commons based on the title of the page you're editing. You can change the search by typing in the dialog's search box.
To choose a file, click on its thumbnail image. This places the image onto the page you are editing. You can then drag the image around to change where it's placed on the page.