300+ sketches about learning, sharing, tech, semi-retirement, business, delegation, and other topics. You'll get a ZIP file (290+ MB) with hi-res images that you can easily flip through or print.
If you want to browse or download specific directories, check out the collection on Dropbox.
Oooh, you can get this in print now! sachachua.com/blog/sketchnotes2013book ($30 + shipping)
Update 2014-03-07: Realized I'd forgotten to include the How to Learn Emacs sketches! Added them to the tech category.
Update 2014-05-09: Added forgotten Emacs Conference 2013 notes to the books/events/etc. category.