Hello dawner66, welcome to Stamp Community!

Depends on what you wish to do with them all.
If you want to keep only some then get some good pics or scans and list on
ebay or SCF here after appropriate time and dues have been paid here (see rules).
If you wish to keep them all, and sort through them to keep only the good ones, then I would decide roughly on what you want to focus on, money-wise or beauty or history or quality or jut plain fun-wise.
People change their choices after a few years also I find and delve off in a new direction that keeps the interest aline, so to speak. Just like any other hobby. New, used, cancels, town names, areas, colours, shapes, on of everything, only really good ones, buy cheap and sell dear, buy anyway and enjoy all to pieces, buy or receive as thankfully as you can and keep and appreciate as thankfully as you can.
Selling, buying, keeping, appreciating, it's all the same. Stamps are fun and so many different one and varieties and variations on the same stamps with all the different tings you can learn about on here and many other free web sites all around, paid and free, yay, too.
Ask and you shall receive sort of thing.
Any pics? Start a thread on a main forum and ask about them or just show off, it's all good.
Doug