rick, first, welcome to the forum.
Not sure if you're starting from scratch, or what date Morgans or grade you are looking for, but everyone has given some great advice. If you're new to
ebay in general, once you log on, do an "advanced search". In the advanced search option you can select completed listings. This will give you a good starting point. Completed auctions on Heritage is good info. Teletrade will list prices realized also if you select the coin you are looking for.
You can always save a picture from
ebay onto your desktop and post it here in the coin grading section as well to get our thoughts and give everyone practice. I wouldn't recommend posting 50 pictures looking for help, but sometimes you just need a sanity check.

Watch out for the basement slabbers as well. They are everywhere. If you buy slabs, stick with the top four
TPG's. If you want to buy raw, remember you can always ask the seller questions. Is this coin cleaned, can you send me closer photos, etc...