I dual-booted 7 with Ubuntu, and it worked fine for a while. Then it suddenly broke my computer like, beyond repair and I didn't have any recovery CD's.
But, the great support there spent 2 hours with me working on some stuff that fixed my computer: D
They have EPIC customer support.
Ubuntu Forums is the official online community forums for Ubuntu Linux Operating System. Joining the forums is free and anyone can ask questions and post answers. This community help system has helped many new linux users to learn more about their new operating system.
A common problem with new linux users is hardware compatibility and finding drivers for their hardware to work with the new operating system. Ubuntu Wiki has many guides on that but forums are an easy way to troubleshoot more complex problems.