This handbook alone reveals how exciting the program is going to be: a chance to explore and reflect on the world's biggest causes with others will develop critical thinking skills and introduce new insights and ideas.
I personally enjoy the part of this reading that calls us to take all presented ideas seriously and not take anything to heart without intentional forethought.
The two causes that have really caught my eye are the AI alignment problem and improving decision making. I'd never fully realized just how interesting and impactful these issues are.