A friend of mine and I will be teaching In Light of Eternity: Perspectives on Heaven by Randy Alcorn to the High School youth over the next few weeks as part of a study called “Heaven and Hell. Mostly Heaven.” I highly recommend this book. It is very easy to read, chock-full of Bible verses (in context!) and it is likely to change your view of Heaven for the good — and towards a more accurate assessment of it. He addresses myths that even some Christians hold, such as that Heaven will be boring.
In the mean time, read Randy’s article about some other books on Heaven that appear to be less accurate: “Heaven Is for Real”, “90 Minutes in Heaven”, and other books about visits to Heaven or Hell.