You'll find a lot of your answers can be found within this development & resources forum, other forums and books.
Some of the best books would be asp.net, visual basic, vb.net and dotnetnuke specific books geared towards module creation.

Lot of it is logic, but it is using it to the max.
A bit more to remember than just web design and skinning. 
But it is these fundamentals that help when entering this new world of coding.

I am fairly new to asp.net coding, and have many questions of my own. You never stop growing.
One site I found especially informative and helpful for beginning stages of module creation is:

http://www.seaburydesign.com/

You will have to do the standard register to be granted access to videos, but there are 7 different videos, all on beginers and custom module development.
The fact that the tutorials are in video format is very helpful. Last video explains various advanced techniques as well.
This will actually cover adding options within module edit, which is what I think your looking for.



Hope this helps.

-Machina12

Try starting at the Default.aspx.vb file which is really where the magic happens.