Doesn't exactly keep you on the edge of your seat wondering what will happen, but it did help me pass the level 2 HAM exam on radio electronics and use, so now I can play with the big kids on the high frequencies (no longer limited to VHF AND UHF). This wasn't the only tool I used to pass the test though, and I may owe more (or at least as much) thanks to "HamTestOnline" and a 3 part YouTube series of videos based on this book (Ham Radio 2.0: Episode 66 - General License Training Class). But yeah, probably wouldn't have passed the test without this. (The description of this, based on the ISBN I entered says it's good up until 2011. I read the 8th edition, copyright 2015-2017. Information is good until June 30, 2019.) ( )