Hello Carl Reimann
When you wanted to make a mindmap with the computer, you can do it whit a program that's made for it. Such as "Inspiriation 8". See the website:
http://www.inspiration.com/productinfo/inspiration/index.cfmIt's really a nice program. I use it also sometimes to make my mindmaps digital (when I don't have a paper or don't wanted to use a paper).
With a paper you have to use one that's have enough space. With a lot of knowledge for the mindmap you can use a A3-paper instead of a A4-paper.
Kind regards,
Ruud