The fabulous Mike Rohde, creator of the word Sketchnotes and author of the Sketchnote Handbook(Affiliate) just published a wonderful Mini-Sketchnote Workshop that covers all the basics you need to know to start sketchnoting.
Sketchnotes and Faces: I really like Draw Tip Tuesday from Koosje Koene. She shares a draw tip every Tuesday and I found this mini tutorial on character drawings in only one minute there. It’s basically my process when it comes to sketchnoting too, so I really recommend watching this video. It shows how simple it is to draw faces – if you make it that.