Yes

No reason why not. If your tyre has a preta valve it will work.

Yes it will work with presta valves.

Yes i have used it three times on my bike, worked every time!

Yes just one tyre can be repaired. You squirt in the sealant and spin the wheel to spread it out inside the tube. It doesn't inflate the tyre above about 40 psi.

After a few minutes I topped up the tyre using a pump.

I found that it depended on the type of puncture, a small hole sealed quickly and i was able to use it twice. Normally once only though, and the nozzle will block after it's been used after a long period of time.

It would be sensible to remove the object causing the puncture anyway.

yes you need to remove the thorn. This is usually pretty straightforward, use your finger to feel the tire. MOst times though the pricking agent will have come off in which case you hear the hiss and you have to locate it quickly before the tire is fullly deflated (I suppose you can still pump it up a bit if that happens).

Seems to be enough for just one tyre.

Once only.

Yes, that's right.

No, but it's small enough to carry in a cargo pocket or small bag.

Same as you always would. It does not seal the valve.

Yes. No need to remove valve core.

As far as I'm aware it's exactly the same stuff. Just different label. E.g old or new