If an old geezer like me can pass it , so can all of you young cats. Don't get mad, just study harder. MH
Since when is being in your 40's an "old geezer"? I took the test back in 1981 and managed to pass it the first time - without all the neat study materials available today. We had Cember; Moe, et.al.; and the Rad Health Handbook. While I managed to pass it the first time, I was always just a little amazed that I did.
After working outside the nuclear industry for a number of years, I was a little disappointed to discover I had lost my "Practioner" status - and the only way to recover it was to retake the exam. I took the test again last year at the ripe old age of 60 and managed to pass it the first time again - although for the life of me, I have no idea how I did it.
This time around I did have the benefit of more and/or better study materials. The Duratek course from a few years ago and a copy of Gollnick were invaluable. I don't recommend self-study unless you have some serious time to dedicate to it and a good mentor to help keep you from getting bogged down in all the minutiae. One of the packaged training classes is what I would recommend for the first-time taker.
Is it worth it? Well, it has opened some doors that would otherwise have been closed and it has been worth some extra money along the way. While I may show some partiality towards people who have passed the test, I am very much aware that it doesn't necessarily have any direct bearing on a Tech's ability to handle the job. I've worked with some outstanding Techs who couldn't have passed the test if you held a gun to their heads. Conversely, I've worked with a few Techs who have passed the test but had trouble turning their meter on.
If you are determined to take the exam, allow plenty of time to study before the exam, get the basic materials recommended in this thread, try to find a mentor to guide you through your studies, and have some fun along the way. If you have the ability to attend one of the pre-packaged study courses, such as at the University of Colorado, I recommend that highly as part of your exam preparations.