\u003cp\u003e\u003cb\u003ePRIMARY AUDIENCE: \u003c/b\u003eBeginners or early-career employees who want to bolster their understanding of the Linux desktop environment. \u003cb\u003eSECONDARY AUDIENCE:\u003c/b\u003e Advanced computers who need a quick reference or are studying for certification.\u003c/p\u003e