My first Youtube channel was created on 2009-02-05.My first video went online on 2009-08-02 and my last video went online on 2009-09-26. I created my new channel on the same day, while already providing a new video on it.
I started being more active in 2012, since I stopped doing anything for multiple months before. In 2013 I started using a uploadplan and a fixed working schedule (that I removed later on). Until today I am uploading my videos pretty sporadically.