There are several apps written for the TomTom GPS line as it is Linux (AFAIK) such as a media player, navigator, etc. How hard would it be to have some sort of simple document viewer? Any ideas?

Errrrr, like what, exactly? Which "Tom Tom GPS line"? What does that mean? Have you posted links to your "several apps"? What Tom Tom are you talking about? What is a Tom Tom?
Have you bothered to find out? Or would you prefer to have us to spend the time to find out for you?
I have no idea.
Please so your own research, and then come back here with specific problems, you'll be very welcome.
This is a very tolerant community, but for a first post, this falls a bit short, not in length, but depth.
Firstly, please read this link: http://www.linuxsilo.net/docs/smart-questions_en.html

May I then recommend that you then spend some time reading a couple of 100 posts on this board before you expect an instant answer? It'll give you a better idea of how LQ works, and how you can work with it.

Meanwhile welcome to LQ! No doubt you'll soon be helping others

What an asswipe.

actually we all could learn a lot from it