It depends on what you are wanting to do; Simpson's offers a appraisel service, Tom Whiteman can too (my partner)
www.legacy-collectables.com ; and we could clean it for you, although that is easy enough to do by yourself. When cleaning a gun, do less rather than more, use oil, take it apart minimally and wipe it down; don't get oil on the grips if you can help it, but if you take them off, be very careful.
If looking to sell it, both of the above offer that service too on a commission basis.
For picture uploading, you can do the album bit, but far easier for you and others to do the Manage Attachments button just a bit further down the page, and you can upload 10 at a time.
Ed