You’ll find chapters here on Scratch, Python, interfacing, and the command line. There’s a group at Oracle which is currently working with us on a faster Java virtual machine (JVM) for the Pi, and once that work’s done, chapters on Greenfoot and Geogebra will also be made available – we hope that’ll be very soon.
The manual itself? It’s brilliant, and we think you’ll find it really useful. Head over to the Pi Store from your Raspberry Pi’s desktop to download a copy directly to your Pi, or, if you don’t have a Raspberry Pi, download it here.