My goal with both is that A) I hate taking notes on a computer; B) I'm trying to increase retention, which I'm finding the sketchnotes definitely helps with; C) I need a better way of keeping up in meetings, and writing longhand just isn't cutting it. I'm not far enough along with the shorthand, but I'm curious if anybody else around here uses it.
Shorthand method: https://www.amazon.com/GREGG-Shorthand-Manual-Simplified/dp/...
Sketchnoting: https://www.amazon.com/Sketchnote-Handbook-illustrated-visua...
There's also handywrite (http://www.alysion.org/handy/handywrite.htm) which has the nice thing that the essence of it (not much different than gregg really) fits on an index card.