You need this book:
http://www.amazon.com/gp/aw/d/0764588133/ref=redir_mdp_mobile
I have it for my d40, it's very informative, and while I haven't used mine a ton (mostly because I am stubborn, and like to figure stuff out myself) it's still useful.
http://www.amazon.com/gp/aw/d/0764588133/ref=redir_mdp_mobile
I have it for my d40, it's very informative, and while I haven't used mine a ton (mostly because I am stubborn, and like to figure stuff out myself) it's still useful.