MARSBOUND (Marsbound series #1) by Joe Haldeman
Published in 2008 by Ace In Marsbound , Earth is just starting to colonize Mars and the Dula family was picked to go as part of a weighted lottery system. The story is told through the eyes of Carmen Dula, a 19-year old college freshman. The first part of the story is a technology-based sci-fi adventure. Lots of explanation of the technology to get to Mars, but at a layman's level and with an eye for the kinds of things that teenagers are concerned about - entertainment, potential romance, how annoying the slightly younger passengers are, and so on. Carmen accidentally stumbles into one of the most remarkable events in human history - literally. A near-fatal fall while on an unapproved excursion away from the colony buildings initiates first contact with an alien species (this is not a spoiler, it is in the inside cover of the hardback). At this point, the book changes focus into a clumsy first contact book. The motivations of some of the characters get more unclear and errati...