Hi,
I have TD for a few days also.
Thats what I learned so far:
1. there aren't too much info on the web. One of better ones is this forum.
2. For software you probably wont stick with official images as they do not contain usefull plugins and emus (My guess its short for Emulator-software pretending to be a sat card
.
3. For some reason everyone in the forum suggests you to load images tvice and format HDD partition #1 (if you have HDD installed)
4. Because there is not much room on local TD memory or so called flash ROM (its only 8 megabytes) you will want to install USB port on your machine (I succesfully done that from hardware point of view but was unable to use that practicaly so far)
It's bunch of tutorials on the forums, so you can get more info on specific things (like changing keys, setting up network etc)
Hope I helped at least a little bit as I'm newbee too
Good luck