LPIC1 revision tip
Just passed LPIC1 and I've got a tip which might be of use to some.
With a good bit of general Unix knowledge, I used the O'Reilly LPI Linux Certification book for my revision. Having gone through the book, I took the sample exams for the 101 and 102 tests.
The mark I got on the sample tests in the book, the first time I took them, were within two or three percent of my marks in the real exams. In contrast the sample questions on the LPI site don't really bear any relation to the exams - the website questions are much easier.