Anyone here know woodworking?

Table saw is definately handy.
I still do a lot of miters by hand. Just bought another larger backsaw this winter...
One you've spent time sharpening them - its another world.
Sharpening is definately a little tedious though.
Makes you a lot more careful about how you take care of the blades.

Anyway. You asked about table saws. I'm not an expert but yes an older saw is often a good deal.
Sears are very common.
Of course another company actually made them. But that won't be in the ad or listing in most cases.

8" Saws use blades with a 1/2" arbor hole. Unless you're tight for space in your workshop, pass them up for a 10" saw.
They're not bad, but there's no reason to torture yourself with the oddball size unless its free or your space is tight.

I prefer a solid steel top.
The better saws will have the pulley retained with a keyway in shaft. Lower end ones rely on the pressure from the setscrew. Under heavy load they slip.
Some of the older bench saws have a tilting top. I'd pass on that.
Tilting blade is definately better!
Whether you one that has a base or you want to make your own is up to you.

Attachments.
If you plan to do ripping, an outfeed attachment adds control.
If you plan on cutting long boards, side wings are helpful.

Most of the saws came with a 'splitter' to help with ripping and provide a little more protection.
All saws originally came with the miter square and a sliding fence.
While you can add aftermarket ones, often its easiest to start with the factory fences.

Buy or make a push stick and feather board.

Dust. You may have to make a saw dust container and for underneath. No big deal.
Dust in the air is a big deal and you should think about some way to deal with it. Bigger shop vac with an intermediary bucket connecting close to the saw will help.