Life is full of transitions. ItÕs just chock full of beginnings and endings and new things and old things. Few life transitions are bigger or more impactful than graduations. In Ò#needtoknow,Ó author Jeff Atwood spent the year leading up to the high school graduation for two of his daughters reminding them of the things they ÒNeed to Know before they goÓ on to the next stage of life. The 180 humorous and challenging pieces of advice he sent them (one daily for every school day of their senior year)form the framework for #needtoknow. Jeff Atwood and his wife Annette are the parents of three teenage daughters. You can follow him on twitter at @jeffatwood.