I agree with AndiE and Vixstar - I'm currently reading Toddler Taming by Christopher Green, and so far it's been great - down to earth, common sense and the humour means that DH is even prepared to learn from it lol. I also really like that he gives examples from his own work and others, it gives me a better idea of how to apply different things, and how sometimes it takes some small tweaks to personalise a method to your family/child/situation, but it can work all the same.

I've not read Toddler Tactics, but it's next on my list!