Here are the instructions to add an image and link it to a web article in your Gmail signature:
1. Save image to computer
2. Go to Gmail
3. Click the cog
4. Click settings
5. Scroll down to Signature and select the email you would like to create a signature
6. To inset image click the image icon
7. Select the option of where your image is
A. If you did save it to the computer select upload
B. If you are using an image from online select the web URL
8. Adjust the size of the image
9. To link the image highlight the image and click the link button
10. Click "Change"
11. Delete initial "/" (slash) and paste in link you want use
12. Click OK
**If unable to see options to Upload Image or select from Drive and can only see Web address
1. Select "No Signature"
2. Save
3. Log out and log in
4. Go back into settings and signatures
5. Select desired email address for signature
6. Click image and the option to upload should be there