Broken links for past presentations' material

Hi All,

I am a newbie and I am trying to learn a few basic concepts by going through some of the past devmtg presentations/Tutorials. I see that the videos for the talks from October 2014 and April 2015 are not available (broken links). Does anyone know where I can find them?

P.S: I came across this thread where there was a mention about one of these material - but not sure if there was a conclusion.

Thanks a ton in advance!

  • Shweta