Recently TheB1M shared a new "What is BIM?" playlist on YouTube. TheB1M call themselves as "The definitive video resource form BIM".
Link to the "What is BIM?" playlist:
I personally like these videos very much. To me it sounds very British English; somehow difficult to understand. Btw, the subtitle functionallity of YouTube helped me to get the content.
Overall the videos are very good recorded, organized and produced. Thank you to theB1M.