I was quite pleased to find that someone already set a link to the second part of my German DotSpatial Tutorial, which so far comprises of 5 parts. I will add at least two or three further parts in the next few days.
The base-link to the tutorial is: http://knowhowdevblog.wordpress.com/category/gis-entwicklung/
I hope my tutorial is of some use to you.
If there is sufficient interest, I would try to translate the tutorial into English later on.
Thanks and regards