Visit the FAA's website and you'll find a revised version of the Instrument Flying Handbook that has finally caught up with modern avionics. The new handbook shows instrument attitude flying techniques for glass panel aircraft, discusses autopilots and flight directors, and terrain and weather systems. The book contains a lot of new, four-color illustrations. They even have color representation of ALSF-I and ALSF-II approach lighting systems. And best of all, you can download it for free.
There's also a document I had not seen before - Powered Parachute Flying Handbook.
Check it out!