Yes you can but you will not have have the worlds that you created on the other computers.
Delete Minecraft from your computer and download and install it again. Once you have bought the game, you can download it to as many computers as you want.
Click download, download it, and sign in. It will work if you successfully bought minecraft.
Yes, go the Minecraft website (if you have full/ bought Minecraft) and sign in. Then click on download and head to the PC download.
aslong as you have bought minecraft, the technic launcher is free to download and play, but you HAVE to have bought minecraft to use it.
You have to download it on the minecraft offical website. It is "minecraft.net". Or just type it on the google and the link will come out. It is safe to buy and download it in the minecraft site. Also you can download it when you have a account and bought it.
First, go to Minecraft's home page. The link can be found under "Sources and related links" below this answer. Then make an account for free, and click the download button. Now you'll have to pay a certain amount (the price changes a bit between £10 and £20, depending on the versions) to download it. Once you have bought the game, you can download it to as many computers as you want.
Yes you can download a minecraft account. You will need to have bought your minecraft account. If you didn't It won't work. First download a skin from a website and upload it to minecraft.net profile page of yours.
If you had bought licence,you can download software from their official website.
That makes absolutely no sense. Please try to give us more information about your problem, else it's very difficult to help you. But I recommend you try to reinstall Minecraft. Remember that once you have bought the game, you can download it as many times to as many computers as you want.
Try and send the file to another computer and play it on there!
There is no legal way to obtain Minecraft 1.0.0 without purchase. Minecraft Classic, however, is still available to play for free online.
Download the latest version from internet.