I keep seeing people being confused about breeds in particular. I thusly believe the tools drop down menu is a bit too unintuitive for people wanting to know about the more important facets of petbattling. And should probably be renamed guides, while the non guide stuff is shunted into a new tab called resources.
Breeds in particular needs to be advertised a bit more, as its a quite unexplained mechanic ingame that you only can learn about going to fansites like warcraftpets. I myself had been a pet battler and a follower of the site for a while when I discovered breeds and their importance, came as a complete suprise when finding out that so many of my hard fought for rares turning out to be poor B/B breed pets and almost killed my entusiasm for it. The earlier you learn about breeds the better!