I studied and took three practice exams -- certblaster, Learn Key and MeasureUp ($11

-- where I had 95 percent scores or better and still failed the cert. I only had 380 score (500 to pass). I have A+ and Net+ certifications, so it wasn't like I was blind to the whole certification process.
I think my mistake was not directly concentrating on each of the Comp-TIA objectives. I used Linux + Guide to Linux Certification as my main book.
Any suggestions for other books to use or strategies that worked for you? I'd greatly appreciate it.