Pre-reading will make you sure you're presenting a book you're comfortable with and can also help you plan for the most dramatic reading possible. You'll learn when to pause, make sure of pronunciation and discover emphasis that will give your reading the best effect. Books with dynamic dialogue make room for you to amp up the theatrics by adding voices and emotions. Tension and humor are good bets for read aloud triumph. Read aloud with the knowledge that the more you put into your reading the more your listeners will get out of it.
Children are great appreciators.
You can take comfort in knowing that you'll never embarrass yourself by singing out loud, bringing in silly props, or hamming up a story. The more you dramatize, the more they'll love the experience. I've found that certain kinds of books work best for specific ages. Here some examples of new books that promise read aloud satisfaction. Beguiling Books For Young Children Patterns and chorusing make sure-win read alouds for younger listeners.