The drama has been the most surprising thing for me about parenting. Who knew that such small people could have such big feelings over such little events?!
I've been reading a book by Janet Lansbury. In part it deals with helping little ones deal with big feelings. And letting parents know it's normal. It's helped me, but hard to tell if junior agrees with that!! She has a website/Facebook that covers most of what the book does.
I also read a book called The Whole Brained Child that has good stuff on dealing with big feelings. It's a little scientific - good if you like a sciency approach, annoying if you don't!