The title is a bit misleading... no, not the geeky part, the pedagogy part. This is not a pedagogy book. This is more a broad view of principles and practices that GINs (geeks, introverts, and nerds) should adopt to offset some of the anxiety that comes with the social interaction aspects of teachings, and the hurdles we have all encountered.
The practices are awareness (of self and students), preparation (for the anxiety-inducing aspects of teaching), reflection (on one's practice), and support (and getting some whether from peers or from the instructional design / teaching and learning offices at one's college or university). But again, this is not a book of tips and design ideas, but of broad principles.
The message seems to be "it gets better... if you practice these four things", that things are going to be ok, there are no superhuman teachers, that teaching is hard, non-linear, and constantly shifting.
This book seems primarily directed at novices but even I, with about 20 years of teaching under my belt, found things to ponder (further than I have pondered before... see what I did there? Yeah, I'm a GIN).
I have to confess some eyeroll while reading the section on gratitude though. ( )