I am using Excel 2011, and want to get a decent reference book. But all the Mac books I saw were "Office 2011" books, not specifically for Excel, so too general. The Excel-specific books are all for PC. My question is: will those be good reference books to use, even though I am using the Mac version of Excel? I am aware of there being differences in keyboard-shortcuts and some menus. Also any suggestions for an Excel reference book (if the answer to above question is "yes, go ahead and use a PC book")? I used to be quite good at Excel, using VBA, but it's been a while, but I want something at the intermediate level. I considered the Excel Bible, and Excel, the Missing Manual. Also, would it make a difference if I get an Excel 2010 versus 2013 book? Is one version closer to Excel 2011 for Mac?