[ubuntu] Version I use has reached "end of life"

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http://ubuntuforums.org – and my computer is prompting me to upgrade. The daughter who set up my laptop is now in the military (OTS) and I don't have access to her. I can't call her right now, and I have a few questions. The current version I use is 11.10, and I've loved it. Here are my questions: 1. I don't know which version I should upgrade to. I'm an author, so I have a great deal of reference bookmarks, professional contacts, and the books that I'm currently working on, saved on this laptop (but my books, and all my music and personal photos, are also backed up on in a cloud and on my external terabyte drive.) I (Hardware)