Can you be a little more specific about the questions that give you trouble? One of the hardest for me was exposure from therapeutic x-ray. Its great that you're taking it. Its a hard test.For me anyway. I studied like a mad b****strd ,stressed heavily, and one hour into it I knew I had failed.I was so stressed I forgot the half life of cobalt 60,drew a complete blank on a number I see a lot. And the bad thing is I had to go to the bath room twice and I passed right by a chart of the nuckleheads and didnt realize it until after the test. Based on the firm knowledge and security of failure I relaxed and completed the other 3/4 of the test. I passed anyway. I was shocked, and there was much rejoicing.The sheer bulk of information is intimidating, but you can do it. I focused on the math, and much to my discomfort their was not much math on my test, and I,m setting there trying to remember the color of some shipping placard out of the cfr among a bunch of things I read but didn't really pay close attention to. PAY CLOSE ATTENTION TO EVERYTHING. Sorry about the caps but I swetted unnecessary bullets. What I did was this. I took Moe and chapter by chapter highlighted everything I thought was important ,answered all the questions at the end of each chapter, compared how Moe stated things to Goal at the Neck, and a few others, stated things and went back and wrote it all down chapter at a time. I made my on study guide,completely plagiarized of course. I also worked through the math book suplied by the NRRPT folks,I believe by White. I also studied ,not nearly enough, the CFRs recommended by NRRPT. I learned a lot. I mean a lot and am better off for it.I dint make any more money,so for me its a personal thing. Out of the hundreds of hps were I work there are very few NRRPTed up techs, so there is little value for it here. But I digress,its early and I've had lots of coffee and am a bit to much awake. But give us a better clue about whats difficult for you and would love to help. And dint worry to much about spelling, I cant spell either and spell check doesn't catch everything.