What do I do with this baseball card collection?

[RickVS]

Hi. I received a collection from my grandmother a decade ago of about 11,000 cards from what I can tell are from the 70's, 80's, and early 90's. I've attached a picture. I'm not into the hobby myself. I'd like to sell the collection. What steps should I take to value the cards and determine a price and a buyer? Thanks for any help that you can provide. RickBaseball-Cards.jpg

[joe63]

Try Craigslist. Most of the 80's and 90's stuff isn't worth anything