Look through the documents given to you at the closing table or your most recent month's mortgage statement. If you do not have a coupon book for your Wells Fargo mortgage, you will have a form attached to your statement that you can cut off and mail in with your check to Wells Fargo. Make sure that you mail this payment before the due date to avoid any late fees.
Go to a Wells Fargo location, if available in your area. Take your payment coupon with you, as found in Step 1. Pay the teller your mortgage payment, referencing your payment coupon for the correct account number.
Go online to Wells Fargo's website (see Resources) to sign up for online payments. Click the link on the left-hand side of the page reading: "Sign Up Now." Follow the instructions to enter your mortgage account information and your payment account information as well.