Okay so maybe I am a bit biased because my wife wrote this book. But honestly, wife aside- this is a great series! Its creative, fast-paced and has great character building. It's considered Young Adult but honestly, I'm in my 40's and I loved in and I know a lot of people my age that love it too! Especially men which I wouldn't have thought at first but yes! Men like it too! So start with book 1- Beyond Earth and Happy Reading!