Documentation, tutorials, etc.

I apologize for being a noob and not knowing a lot about java, but
from the wikipedia page I was getting the gist that this was a game to
help one 'learn java' and 'have fun doing it', yet from what I can see
there is very little to actually do with the fundamentals of java.
One can learn elsewhere but then you don't learn the things desired
for robocode.  Is there no from-the-ground-up all the way to
medium-level robocode tutorial?