This is another of those strange ocurances where I typed a rather lengthy post last night, then apparently never hit "submit reply." So, after removing all of the parts that have already been covered very well by others, I will just add the following: If you want to take the time to search for varieties, and don't want to spend the money for the "Cherry Picker's Guide" mentioned above, our host has many varieties listed at Variety Plus, Click here, and another helpful site is Variety Vista Link here.
I do think it would be worth the trouble to find a copy of the "Red Book," also known as "A Guidebook of United States Coins." The prices listed in it are not realistic as far as valuing your coins to sell, but can be used to compare one coin to the others in the series. You can sometimes find a used copy at a thrift store or used book store.
And, Welcome to the forum.