http://www.bluetooth.com The Bluetooth website.
http://www.holtmann.org/linux/bluetooth Marcel Holtmann's Linux and Bluetooth page. Articles in English and German, plus downloads.
http://www.cs.ucl.ac.uk/staff/s.zachariadis/btpalmlinux.html A guide to connecting your Palm PDA to your PC with Bluetooth.
http://tuxmobil.org The place to get information on Linux on all sorts of mobile hardware: laptops, PDAs, and cell phones. A monthly newsletter is available as well.
http://tuxmobil.org/Infrared-HOWTO/Infrared-HOWTO.html The Linux Infrared HOWTO. Configuring and using IrDA.
http://linux-laptop.net Another portable Linux site.
http://www.sane-project.org Home of the Linux scanner driver project "Scanner Access Now Easy." Search to see if your scanner is supported by Linux.
http://www.ntp.org Network Time Protocol home.
http://ntp.isc.org/bin/view/Servers/WebHome The Public NTP Server list. Find a Network Time Protocol server to connect to. Contains much more helpful information, too.
http://www.cpqlinux.com/acpi-howto.html The Linux ACPI HOWTO.