Grainydays, Grain check, and Willem Verbeeck are my favorites.

I care less about gear or techniques, after college photo I didn’t want to hear any more about technique (but I love learning people’s story process), and I don’t care to stay up in gear like I used to.

If you like Grainy Days, Graincheck and Willem Verbeeck are similar. Kyle McDougall is great too.

Photographer’s Playbook has “assignments” from all sorts of professors and professionals.

You might be able to sell it as a whole, or in chunks, to someone/persons who collect vintage film/scans/postcards/etc. I have some friends from the industry who did this for a while. It likely won’t be gobs of money, but it may be finding good homes this way. I’m not sure how you’d go about selling it in the most efficient way possible though.

I’d reach out to your local museums, galleries or maybe colleges to see if they would have any suggestions on where it could be sold or possibly donated if anything.