I'm no expert on Brittany, so I've been relying heavily on the internet to supply me with info on Brittany for topics! I thought I'd list here some of the more helpful ones that I have found so that you can check them out for yourselves if you'd like! Check back here for new entries as I will just edit them in on this post as I find them rather than adding new posts.
http://www.franceway.com/regions/bretagne/intro.htm
http://www.brittany-net.com
http://www.brittany-bretagne.com
http://www.brittanytourism.com
http://www.discoverbrittany.com
http://www.pvf.dircon.co.uk/index.html
http://www.region-bretagne.fr/CRB (This one looks good but its only in French! And since I have no French I can't say anything good or bad about it!
However there is a note that says an English version is coming soon!)