Hello Monstertux,
there is no easy way to do tracks easily with blender. I will tell you my experience to try to make you understand why it's not so easy.
I tried blender like many other freeware when I was learning ubuntu. I do a mushroom based on a video tutorial I found. I sent it on this forum (the old) and I found there a community which accept my little contrib with enthusiasm .
Video tutorial are rare this is why I buy a book with video lessons. ( This the way I learned blender. but ... )
I do an entire track with blender and I submit on forum, proud of me
After some efforts Canis Lupus made my track running. It was ugly due to problems of graphic engine drivelines ... I didn't read the wiki
Since this time , I continue learning blender and translating wiki to be easier for french friends.
I started to participate to supertuxkart on december 2008 and this is what I done since this time :
http://supertuxkart.sourceforge.net/User:STKRudy85Nothing is impossible, you have to give you the time, and know : learning an open source software is never wasted time