If you're completely new to Tribes and Dune Tribes, then I suggest starting out with the Tutorial I wrote. It covers just about everything you need to know and probably more. You can jump around and read as much or as little as you want to get started, and it won't have any annoying ads like with this site.
Tutorial(Online A-Z guide for getting online with Tribes, and Dune.)
If you just want the damned game without screwing around, here you go:
Download Starsiege: Tribes(Direct from Sierra, the publisher. Full install.)
Download the 1.8 to 1.11 update(Direct from Sierra, the publisher. The full game download installs v1.8 of the game. This patch will bring you up to date completely.)
