[Phlogiston]

My recommendation is to find some one local (to you) that can give you a hand. I often help people around these parts, but it would be a long drive for you.

It is going to be complicated for a beginner.
At least a partial recap
Service the turntable
Trouble-shoot issues, which could get complicated
Having the right tools- can you solder? Some of those early PCBs can be a challenge for beginners - or experts
Ordering parts - what to get and where to get them
An explanation as to what to expect from speakers and what benefit - if any - will be gained from replacement
Talking you into not turning it into a bar

See if there is a local radio club.