1) Go to Google.
2) Click Images at the top-left corner of the screen.
3a) Type in the type of picture(s) you are looking for b) and hit Enter.
4) Peruse the images that appear and click on the one you want to download.
5) On the right side, click the Full size image link.
6) Right-click on the picture and click Save image as...
7) Save the image to your computer and the download will begin.
You now have your picture from Google.
LEGAL NOTICE: If the image you are downloading is copywritten, trademarked, etc. You should receive permission from its author for its use, otherwise they do have the right to perform legal recourse.