Just my 2cents, Focus first on getting to core Linux community up and running on developing applications for Maemo and Nokia devices.

This means do a very good job of documenting all low level apis, publish device driver code and clearly highlight highlight how to access the full functionality of the devices.

Basics

* File system details
* Loading operating system
* Battery management
* "Brick" Recovery.... (Assume everyone will brick their system multiple times and make it EASY to recover)
* DBUS

Hardware Specific

* GSM Modem
** Call Control
** Media Control
** SMS Messaging
*** Text
*** Text with Attachments
** SIM manipulation
* Accelerometer
* GPS
* Touch screen
* Wifi
* Bluetooth
* USB
* FM Transmitter

And most importantly, try to consolidate the location of information, provide a real table of contents, and keep the links fresh Finding information on Nokia sites can be maddening.

Good Luck....