How to add a header image to a site.

1  Enter the Dashboard
2  Access the Media Library
3  Drag images from your local computer onto the Media Library window
4  Access the Appearance / Customise menu option
5  Click on the Add New Image and select the image you require.
6  Use the select function to frame the image by dragging the selection area around and resizing as necessary,
7  Click on the Crop Image button to trim the image as set.
8  Repeat this process to add additional images as needed.
9  If required, click on the Randomise button –  this will have the effect of adding a different image each time the site is loaded.