Real World Bryce is great. Other than the tree lab and some new render options, Kitchen's book is very much applicable. The light lab merely combines the lighting controlls in one place that were formerly scattered all over B4 so again, Kitchen's book has most of B5 covered. Bryce 4 FX by Coriolis is good too. I ran across another B4 book and can't find it now, wasn't all that great anyway. One of the real hot places to find stuff is simply by searching the net for bryce tutorials. There's been a huge following of this software for many years and you won't ever reach the end of the internet when it comes to Bryce web pages. I actually learned more by doing that than any other method. Even put up a couple of silly tuts myself at www.annsartgallery.com/eric.htm