Slowhand wrote: XK0-002 is still the current Linux+ exam, as per the Prometric site. If you're looking for a decent book to study with, I'd recommend this one. You will, however, need to do more than just read the book to pass. This exam is very heavy on command-line tools and their various options, along with some relatively advanced topics, compared to other CompTIA exams. Get yourself a copy of a suitable Linux distro and VMware, set up a couple of test-boxes, and make sure you go through each of the case studies and labs at the end of each chapter of the book. You'll need the practice to remember if -r, -R, -i, -I, -l, or -L is the flag you want for some command or another. Memorizing all those flags, which mean different things for different utilities, is hard enough. Remembering what's what on the day of the test is a good way to have to shell out another $250 down the road on the same exam.