would like to try linux

started using pc in my 60s .not up with all the tec.jargon.my question is am running xp pro on desktop pc.can linux be loaded on with it? and how to load it .or would it be better to fit another hdd to load it on to as still learning .and want to learn more and try new things but dont want to kill the pc in the process.ps have learnt a lot from using your site and will continue to do so.cograts.on being one of the better sites to use .regards roy spaggs1942@sctelco.net.au