GNU/Linux certifications, and in particular Linux Professional Institute (LPI) certification, are increasingly becoming a key differentiator between IT job candidates. “LPIC-1 In Depth” offers the most up-to-date test prep guide available to successfully pass both Linux Professional Institute Level I exams, LPIC-1 101 and 102. Each chapter maps completely to a section of the test, and includes end of the chapter review questions and answers. The appendices include a full glossary of terms and two sample exams for self-testing.
I used this book to help prepare for the training series I did for cbtnuggets.com (Shameless plug.) The book is very well done, and while it is obviously written for the test, it still covers enough extra material to make it useful for other things.
Since I read the book with a super critical eye (I'm a trainer after all), I did find a few minor errors, but nothing horribly incorrect.