No, but you must update it. :)
No, once you purchase a Minecraft account, it will never expire.
No, after you purchase your account, it will not expire.
When the full Minecraft game is released you will have it if you buy the beta.
No
There is no way to get the full version of minecraft for free, but you can play Minecraft Classic for free.
To go full screen in Minecraft, you press F11. (Not sure if it works on Mac, but it probably does)
A full minecraft account costs $26.95
The size of the download for Minecraft is 258 KB.
At least 98% of all Minecraft servers are free. Classic Minecraft is always free and does not require you to buy and download the full version of the game. However it has limited abilities and blocks compared to the full version. Minecraft creative and Minecraft survival require you to buy the full version. Once you have bought the full version, full version servers are completely free. See the related links below for more information.
The full version of the Minecraft game can be purchased from Minecraft's own website, and is available for PC and Mac, as well as Android and iOS systems.
In order to play the full version of Minecraft a license must be purchased at the Minecraft homepage. A free, browser-based version of Minecraft called Minecraft Classic is also available on their website but it lacks the majority of features in the full game.
Nope and yes.It is like a demo for the full version of minecraft.