http://wiki.esoui.com/MyFirstAddon_tutorial
That's a link to a simple counter tutorial. it has allot of the basics you are asking about. I started there.
The listing and color change stuff isn't to hard but adds allot of complexity to the code. its probably a bit much to start off with.
Take a look at the code from that tutorial and try to create a panel with text labels listed in it instead of a timer
If you give it a initial try and post the code you have, everyone here is very helpful and will assist with any issues or give advice on where to look to find what you need. There may also already be some useful topics in this forum.
you can also look at the code of some of the existing addons to learn from.