It looks like this I think they are generically manufactured and sold under a bunch of names. I had trouble getting mine working as well, especially audio, but I’m on Linux so I figured that was the case.
That's an analog 8mm video camera that's around 20 years old. One of the little doors or flaps on the camera probably hides a pair of RCA connectors for analog output, one of them yellow (video) the other white (audio). To hook it up to a computer you'll need a analog to digital video converter that plugs into a USB port, something like this: https://www.amazon.com/MyGica-Capture-Windows-Digital-Composite/dp/B0197IWSNC/ref=sr_1_9?ie=UTF8&qid=1490808143&sr=8-9&keywords=analog+to+digital+video+converter, depending on your OS and computer. You'll need RCA cables to connect the camera and converter, but they're easy to get and you've probably got some lying around.
If the batteries you have are anywhere near as old as the camera, it's likely that they will not hold a charge anymore. You should charge them and see how long they last before going out to shoot; they may improve a little after a few cycles. Replacements are available online for $20-40.
Cameras for the 8mm format haven't been made in 8 years, so finding tapes locally is a long shot. Your local big box electronics store (Best Buy, etc.) may carry them, but you'll probably need to go online. Expect to pay $6-12 for a 120 minute tape.
I use one of these super cheap av to usb cables and OBS Studio with decent results. Here is an example of the quality.