All you need to do is make an account on minecraft then buy the full version. If you do download it and you don't get the latest version you just use your minecraft password to update. If you don't know the password then you need to make a new account. If you've already bought minecraft and you forgot your password then you can redeem you minecraft gift code to buy minecraft for free. But you can only do this when you've bought minecraft before.
i think in the minecraft pc version
There is no 'password' for Minecraft, in any version. The password is user specific; each user makes their own password. You either need to buy Minecraft and in doing so create a password, or play offline. Note - it is illegal to have copies of Minecraft, but if you have lost your password, there should be a way to change it or find it on the Minecraft official website.
There is only one version of Minecraft currently sold by Mojang. It costs $24.99 and give you access to the current version of Minecraft and future updates. You can find Minecraft Alpha codes on eBay for $10. These (should) give you the current version of Minecraft.
If you buy minecraft, it makes it so your minecraft.net account is registered (so when you log on to the site you can play the alpha version).
Minecraft Has no Security Password
You need a password, it's the same password as your Mojang or Minecraft account.
Just an E-mail! Then of course you have to make a Username and Password. But if you are buying the full version it will ask Paypal.
Nobody makes their Minecraft password publicly available or they would get hacked.
No one makes their Minecraft password publicly available or someone could easily hack their account.
when you open minecraft you enter your username and password in the username and password box. you hvae to register on the minecraft website
You can play the demo version or Minecraft Classic on the Minecraft website.
how to log in minecraft 1.3.9