How do I put a paypal logo in the footer of my site?

Paypal offers a variety of logos to show on your website - in order to use any of these on your site just right click on the image and select copy, then go to you site admin page editor ( home page and or footer) and place your cursor where you want the image to show then right click and select paste OR press the ctrl+v (control and the v key at the same time) to paste the image into place: