http://downloads.openmoko.org/snapshots/2007.11/

The link above is where to download the newest offical snapshot for OpenMoko. Apparently it can make and recieve calls most of the time, however battery life is still a major problem due to some power management problems

Off the the site:

Major changes since OpenMoko 2007.1 August Snapshot:

• Performance and stability improvements all over the stack
• New features in the PIM applications and the mediaplayer
• Revamped dialer, application manager, and neo device daemon
• New application: openmoko-browser (webkit-based)
• Lots of tiny little things under the hood...

Please see the OpenMoko Wiki for installation instruction

It looks like the software is maturing nicely, and we should have a usable phone too. I have also read that the Wifi drivers are very strong and getting ready for GTA02's release. Here is a guide to flashing your OpenMoko on Ubuntu:

http://wiki.openmoko.org/wiki/Installation_guide

I recommend the Ubuntu environment, and a good place for any non Linux user to start is my buddies blog Ubuntu1501. It is a great place to learn about Linux and learning about all the powerful tools that comes with it.