I have been working with Crystal Reports for over 2 years and am thinking about getting certified. I found a couple of books - Crystal Reports 2008 Certification Questions and Answers: 1000 Plus Questions - Business Objects Certified Professional by Antonio Iroko and CRCP Crystal Reports Certified Professional All-in-One by Annette Harper. Would these be sufficient in preparing for the exams or would it be better to enroll in instructor-led courses?
Alternatively I have thought about becoming more knowledgeable on the SQL side of things. I like to approach things a bit systemically - I can understand the big picture better if I have a better grasp of all the details.
What are the pros and cons of the different tracks? If you were looking for a contract worker to write some reports, which would look better on a resume?
I appreciate any and all advice from seasoned Crystal Reports pros!