Wells Fargo will not sell the house directly to you. They will assign an asset manager who will then assign a realtor to list it for sale on the Realtor MLS system. Wells Fargo may be merely the "servicer" and may not actually own the house. If Fannie Mae owns it they will only allow an owner occupant to bid on the property during the first 14 days.
So... find a Realtor you feel comfortable working with and have her set you up with an automatic notification if the house you want comes up for sale. You need to go out the same day it is listed because some asset managers will take the first reasonable offer. Also you may have to offer "above" the asking price to compete with other bidders. Your agent can send you the recent sales of similar homes so you can get a good idea of value.
Lastly if the house needs work, it's possible Wells Fargo may restrict the purchase to ALL CASH buyers only. You can get an FHA 203K mortgage that will allow repairs done (even a new roof) after closing so make sure your lender approval letter specifically states you are approved for a 203K or 203K Streamline (under $35k). Wells Fargo is the best choice to get a 203K mortgage.