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Vincent Sunleft a comment
macOS Sierra is built on a rock-solid UNIX foundation. It’s one of the most advanced operating system. It’s easy to learn and to use. You can also combine your Mac with your iPhone and iPad, to improve productivity. There are lots of high-level skills which are shown in pictures and videos in this book.
macOS Sierra Head FirstImproving productivity with your Mac and iPad.
macOS Sierra Head FirstImproving productivity with your Mac and iPad.