Slowly getting switched over from Windows to my new MacBook Air. Did get the Pogue book on El Capitan, though think it is way to advanced for me, at least at the moment. Now I am looking for something that will help me convert my Excel personal finances spreadsheet to Numbers, and than maintain it. A kind lady at Apple got me started on Mail, and showed me that by going to Help on Mail, it could look at essential a manual. Tried that with Numbers but no success; no such manual there. Really like manuals so that I can lay the book down by the computer and refer to both at the same time. Haven't gotten used to split screen. As an alternative, could work Numbers on the Mac and look at tutorial on the Windows HP. Suggestions welcomed! Thanks!!