Is there a book or any reference material that I can read about sex? My partner and I never seem to get it right but we want to learn.

There are definitely endless reference materials out there on sex. You could make your partner hit the book stores (people are not as judgmental about boys picking up sexual materials) or you could go online and check out various websites. I recommend www.sexetc.org. Here you can find loads of information about sex, intimacy, performance, sexually transmitted disease (STD), birth control, contraceptives, etc. What do you exactly mean by “get(ting) it right?” Are you holding high expectations of yourselves in terms of performance? Keep in mind that most magazines for men, women and teens are there to sell the magazines and their advice about relationships may not be true indicators of what is right for you. Don’t compare yourselves to others or what you think “should” be. Pornography isn't the best place to get information either as it has actors in it that are paid to do what they do.  What is most important is that both of you enjoy the process of exploring sexual intimacy and communicate your likes and dislikes, and experiment and then experiment some more. Besides, the best way to learn anything is by making mistakes, learning from them and you will find what is best for the both of you.