I think it was ~6 different talks, not counting the different length versions (i.e. I gave my devops talk for a 45 min timeslot, 1 hour and 1:15)
It takes a bunch of time to prepare! Reuse your stuff because it'll improve every time!
Thank you for your reply, and (if i may ask), how many time it take a 1 hour talk preparation? Every time i have the anxiety to make a hour talk and not enough material to speak the entire time, so i prepare a 2 hours talk and talk like a machine gun ;)
That varies a ton. If it's based on existing blog posts or egghead videos I'm done that time is shorter (maybe 30 or so hours of prep?) but other talks can take much longer.
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