There are no villages or other structures in the demo version. You will notbe able to find strongholds, jungle temples, desert temples, mineshafts, or villages in the demo.
you can
Sure is!
No
Go to minecraft.net and click "Buy Minecraft" or "Play the Demo".
You could get the demo version or Minecraft Classic on PC.
The PC Demo lasts 5 in-game days (1 hour 20 mins) and the PC full version lasts forever
Yes. you can use INVEdit.
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.
You can play the Minecraft Beta demo by finding the PC Gamer demo on their website. In order to play the full game though, you will need to purchase it from the Minecraft website.
Press speak button :D and speak
Yes, I am pretty sure that you can. You need a Minecraft or website account to play the demo I think, if you didn't know that already. Hope this helped! :)
You'd need to upgrade to the premium version, to remove the restrictions imposed by the demo version.