It's all about feelings
I passed through my Certified Scrum Master training early last year. Since then I've been practicing daily, running teams at Fudge.
I've always got a Scrum book in my bag (currently Agile Retrospectives) and I read as much material as I can get my hands on.
If you think that passing through a Scrum course, or reading a couple of books will set you up to be a solid-gold-scrum-god, then you're mistaken.
To do the job properly, you need to be genuinely interested in Scrum. Being your team's Scrum Master doesn't make you a glorified project manager. Being in tune with your team's general mood is as important as knowing the status of the project you're working on.
Observe your team and look for changes in mood or attitude. Think about performance changes over the duration of the project. If there were pronounced changes in output, find out why.
Don't look for people to blame, try to find out what could be causing it. Is there tension between team members or are personal problems having an impact? This doesn't mean you need to act as a big brother or sister, just take the view that general wellbeing is as important to the success of the project as anything else.
Anyway, there's plenty to learn beyond the material you'll cover on your CSM course. Trust me.
