having replaced a pc for a friend and been left with his old one I am considering putting a version of Linux on it. I tried to install Luna Linux but it says the processor is not able to run this version. Is there a simple Linux version that will run on an old pc?
I think Lubuntu 12.04 may meet your requirements. I installed it on a very basic, ageing Dell Latitude laptop that was previously running XP and it works OK. That is not dual boot, but there is no reason that you couldn't do so.
I remember Googling a YouTube video installation demo. I cannot find it right now but there seem to be plenty of options for you to choose from if you want to swot up.
SparkyJack, you are right. Windows 8 is a complete rip off of Ubuntu in many respects, just as Apple has just ripped off the Ubuntu Unity interface and claimed it as it's own.
Either of them can hardly cry fowl of Linux claiming intellectual property infringements, when they copy from others with impunity. It's not that they've done anything wrong, as Linux (in the main) is open source and usually licensed so others may do just that. But to claim it as your own without giving any credit to the original developers is sick.
It does however prove just how far ahead Linux is, when the major players have to copy stuff from open source.
Where I would differ from you is, I don't think Ubuntu is Windows like - at least if you're comparing it to XP (or even Windows 7). Anyone looking for an XP lookalike should gravitate to Linux Mint in my view, where the learning curve is minimal and the interface instantly recognisable.