You can, but they can't be on the same server.
The first person that got on the server will be kicked, the second person will instead be on.
no if online yes if offline
In a sense, yes, but in another sense, no. You do not need to install Minecraft to play it on a computer, you can simply run it in your internet browser on Minecraft.net. However, if you want to run Minecraft without an internet connection, or without visiting Minecraft.net, you must install Minecraft on your computer. You can install Minecraft on multiple computers under the same account, but your saved worlds will not sync between computers.
Yes and no.Only if the device is the same family as the original account. If you have a computer Minecraft account and want to play Minecraft on an X-Box you won't be able to.X-box Minecraft accounts will not work on an iOS Minecraft account, etc.You still need to buy seperate iOS, Android, X-Box, Playstation and Computer games/accounts. (Mac, Windows and Linux can use the same account tho.)
Clear all the Minecraft folders on your computer and don't use the same Minecraft name :D
Same as you would on a PC. Download Minecraft from minecraft.net Then run the game with a paid account.
Yes, you can use Minecraft on as many computers as you want to after you purchase it. However, only one person can play Minecraft at a time online. This means that you can't play minecraft with your friends unless they have purchased Minecraft as well.
no if online yes if offline
Same place as the computers vanilla Minecraft.
In a sense, yes, but in another sense, no. You do not need to install Minecraft to play it on a computer, you can simply run it in your internet browser on Minecraft.net. However, if you want to run Minecraft without an internet connection, or without visiting Minecraft.net, you must install Minecraft on your computer. You can install Minecraft on multiple computers under the same account, but your saved worlds will not sync between computers.
World of Warcraft can be installed on as many computers as you want. The problem is that you need a CD key and a account to play but you can use the same account on every computer you have it installed it on. I.e. you can have any number of computers but you have to pay for a serial number to create your account - each account is separate and costs $15/month to have.
Yes and no.Only if the device is the same family as the original account. If you have a computer Minecraft account and want to play Minecraft on an X-Box you won't be able to.X-box Minecraft accounts will not work on an iOS Minecraft account, etc.You still need to buy seperate iOS, Android, X-Box, Playstation and Computer games/accounts. (Mac, Windows and Linux can use the same account tho.)
Clear all the Minecraft folders on your computer and don't use the same Minecraft name :D
The same way you do on a home PC.
You need a password, it's the same password as your Mojang or Minecraft account.
You should be able to use your iPod and iPod Touch on the same iTunes account on both computers.
Yes; if you're using one account to log into both computers... however you wont be able to play on multiplayer.
Same as you would on a PC. Download Minecraft from minecraft.net Then run the game with a paid account.