I thought this was a good overview - started with the basics for anyone who didn't know them (briefly!), but them moved onto some useful concepts that might not have been immediately obvious to people using these types of systems for the first time.
Some good nuggets in there that are definitely worth considering, although I agree with others on the delivery - the Hebrew added nothing for 98% of the audience.
One thing the speaker seemed to forget to mention was a work/life balance - there's a line between passion and obsession (500 consecutive days of commits?)