Backing Up ITunes library on Windows with JAWS

I am running ITunes on a windows 7 computer running JAWS 17. Latest update of ITunes. I want to save my ITunes library to an external hard drive. How would I go about doing this?

also, how do I go about deleting old versions of apps from my ITunes? I hate using it on windows, I've heard Mac is easier but haven't used it.

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