I read the entire official exam prep book (which was slightly out of date, and *very* dry in some areas); additionally, I did all of the LinuxAcademy (~27 hr) course including all hands-on labs and took the end practice test twice with 98% on the last try. Then, I moved to WhizLabs 7 practice exams online, passed all of them between 80% - 90%, and finally sat the exam on Sept 26. I cleared all 65 questions in 47 min, 21 seconds [which included 2 questions I marked for review], and passed with 89% percent per my official exam score. I did all of this without anything more than very light hands-on experience, and wrapped it all up in under a month. By far, the best prep material was my time spent in LinuxAcademy - suprisingly great material and it kept me interested the entire way!