Are you familiar with cleaning guitars already?
I've never used naphta on a guitar, but it is used in wet sanding because it's not water based.
I never use any guitar polishes on a guitar or should say I don't anymore. I used em all in the past, Gibson, Martin, Smiths and they got me in more trouble than I care to remember.
I use Meguiar's Cleaner/Wax, really removes wall paint scuffs on headstocks in a hurry, like nothing else, and leaves a brilliant shine.
NEVER put anything on your guitar.
Put it on the rag, then wipe it on the guitar.
I've seen someone squirt polish on a guitar, answer the phone, and by the time they came back it left a cloudy streak in the finish, it looked like it was going to need to be refin-ed, unreal.
A guitar cloth.
These are not to be underestimated. Some of my finest polishing comes from old guitar polishing cloths, not impregnated.
Dry polishing with guitar cloth is best, use a little breath to loosen crud.
I bought more guitar polish in my first 20 years of guitar ownership when I basically had one guitar.
I've had 100 go through my hands since - 20 subsequent years- and will not buy any kind of store bought guitar polish, and the smell, ugh...
Meguiar's products are pro industry standards for car care, fine cut cleaner, heavy cut cleaner, I have em all, rarely if ever use them, just the wax.
Wax on Wax off ;]
And this.
Gorgomyte. Get some. Clean and polish the fretboard and frets, nothing like it.
I personally do not oil boards afterwards. Old boards like this are quite sealed by products and time. I'd much rather have a high polish luster than an oily board that weeps around the frets for a while, not to mention even the beast oil out there F1 Bore oil "made from all natural ingredients" actually stinks suspiciously like man made fragrances, no thanks.