DC Universe/Batman Guide Books

I used to get these books years ago when I was into Marvel and I have a few Star Wars books too. These guides tell you how something works, who characters are, all kinds of details. I haven't gotten any DC guide books because of the bias in the character section. It's really annoying to the point I want to create my own. Because I shouldn't be reading from a character POV that's different from canon and dislike how said character comes off.