I think non-credit courses would be fine. Hopefully they can be a little more course specific. The possibility of getting a license in the future is there, but mainly I am looking for more education right now.
Thanks for the reply
As far as I know, there are some online classes on surveying offered at a few US online colleges. Unfortunately, I don't know exactly which colleges have surveying classes. If you browse through this online college database or do some research on the Internet, I am sure you'll find a few courses that may interest you. I am afraid that online courses on surveying will likely be quite expensive.