Yes you will need a single normal account. when you have signed in the first account the second player can log in as a guest and it will make a second version of the first account with the difference if a (1) so you can define between the characters.
You need an account, yes. When you start the minecraft program, it needs to log you in to your account.
You must register your account to play Minecraft, however, anyone can download Minecraft.
You need a premium Minecraft account to play online with other people.
There is no fake Minecraft, but you need a paid account.
You need an account to play minecraft multiplayer.
yes. But if only you didn't need Minecraft Premium account D:
yes
You can buy minecraft at minecraft.net. First you need to make an account, then you need to buy a premium for that account. Then download minecraft, and login. Now you're ready to play.
You need a Premium account which you get when you register your Minecraft name and purchase the game.
yes
You need a password, it's the same password as your Mojang or Minecraft account.
You can get a free Minecraft account, but you need to pay to upgrade it to a premium one before you can play the full game.