This is a great site to ask and learn. You will never be ostracized for honest inquiries.
The
Red Book is often given as a great learning tool to figure out what you have and it's relative scarcity- though the pricing is not to be taken literally. Use it a learning tool.
And don't ever clean your coins!!

Edit to add:
Red Book is for
US coins.
Edited by thisistheshow
10/07/2019 12:41 pm