Rubber Grip Has Developed "Sticky Spots"

Advance Motor gear(s) needs replacement

That is a sign of age. Best thing to do is replace it.

You're on the right track with oxidation. Try cleaning the contacts in the body and on the lens with contact cleaner, and let it dry. Remove the battery, and clean the contacts inside the camera.

This sounds like the zoom ring has had a knock somehow and it is no longer free to rotate.
I think it is too early to be wearing out.
Either way I suggest you have it inspected by a camera repair shop as it will only become worse over time.

Odd this is the second Nikon F65 for me to write on in the last five minutes.

Here is a link to a film page about half way down there will be two links for the PDF file for the manual. Yes the man is looking for $3.00 and if you are generous you can pay him most don't

http://www.butkus.org/chinon/nikon/nikon_f65_65d/nikon_f65_65d.htm

Gotta Love Film

When you get your film processed, you can request that they be put on a CD. The CD can then be read on a computer and you can do whatever you wish with the photos. For existing photos, you can also have the negatives scanned and put on a CD. If you only have prints, they can also be scanned but the quality will suffer.

When I get film processed from my Nikon 35mm SLRs, I ask for only the CD and no prints. This only costs me $2, and I can choose which pictures I want printed--after doing whatever photo editing I want.

Any camera store can do this for you, as can many department and electronic stores.

The F65 is a film camera. You must get the film processed before you can see any pictures. If you have the setup yourself, you can develop the film. Otherwise, take the film to a photo processing lab (any camera store and many department stores, drugstores, and supermarkets either have them or have access to one) and get it processed. If you're shooting negative film, you can get prints. If you're shooting slide film, you can get slides. Either way, you can also request a CD containing the digitized images.

Again, the F65 is a film camera. The camera can't show you the images it has taken.

How about using a leather cleaner?

In that case, the AF system has failed.

Unfortunately, this now means that you F65 has just become an unrepairable spares donor. Your camera was a short-lived budget model and Nikon never gave it the spares support of more expensive models.

IF you can find the spare parts needed, they'll exceed the cost of replacing your camera, and that's even before you include labour costs.

It's not all bad news though: models like the F65 and F75 are simply of no value to Nikon enthusiasts so are available very cheaply. I recently got a boxed, mint, "used for just one holiday" F75 with the kit 28-100 lens for free on my local Freegle group (a UK offshoot of FreeCycle, where many of my other Nikons and Canons have come from). Used camera dealers tend to sell F65/F75 bodies for around £50-£60, and on auction sites they tend to go for anywhere between £5 to £30 unless there are competing idiot bidders. Last summer I also got a Nikon n8008s (F801s) on FreeCycle, it's a bit battered but works perfectly, so it's definitely worth registering with all of the groups within easy reach of you and regularly scanning the offers.