Sure is!
You could get the demo version or Minecraft Classic on PC.
No, Minecraft, the full version, is not free. It costs $26.95 US dollars. However, they do offer a demo version for the PC, and classic (which isn't too much like the full game, demo is more like the full game).
you can
No
Go to minecraft.net and click "Buy Minecraft" or "Play the Demo".
To get Minecraft for free, you need to download it on Xbox.
You can get free Classic Minecraft from the minecraft website, and play the demo version there too for free.
Visit the Minecraft website, you can play the free demo version, or Minecraft classic from there.
Yes. you can use INVEdit.
You can play the demo version or Minecraft Classic on the Minecraft website.
The PC Demo lasts 5 in-game days (1 hour 20 mins) and the PC full version lasts forever
If you can get the Minecraft demo to run on your PC it is very likely you will be able to play the full game. The more things happening in the surrounding areas will have a larger impact on your computer.