How to install a second operating system?

I want to install Ubuntu on my computer which already runs Vista. I want to be able to run one and then reboot into the other (Dual boot?) I have two hard drives, one is empty and I want to install Linux on the empty hard drive. I've tried to google it but cant seem to find a clear text tutorial on how to do... show more I want to install Ubuntu on my computer which already runs Vista. I want to be able to run one and then reboot into the other (Dual boot?) I have two hard drives, one is empty and I want to install Linux on the empty hard drive. I've tried to google it but cant seem to find a clear text tutorial on how to do it, anyone got anything for me?

10pts to most helpful answer :)
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