Hello From Indiana, Overwhelmed With My Grandfather's Stamps

I have no idea what to do with so many stamps. I have boxes (when I say boxes, I'm talking 5-10), books, mint folders, tiny wax envelopes, postcards, etc.

I started to go though them but I got overwhelmed easily. Especially since there are stamps from all over the world. The only one that I can recognize is the Penny Black (Queen Victoria) I also noticed there are some light red, dark blue, and brown Queen Victoria (penny & pence) stamps as well. I don't know what to do, or where to begin.

I'm interested in selling some (because there are so many) but I do not know values of any of them. I can provide pictures if anyone would be willing to help!

You can write me via stampcommunity email and I'll help you with Canada, England and British Commonwealth.