Red tinted glasses.

Keyboard use:

Ergodox keyboard: a split, fully programmable keyboard with matrix layout and a thumb cluster.

Dodohand: a promising project to revive the Datahand which is a keyboard minimizing finger movement.

Pentadactyl: a Firefox extension to fully control the browser via the keyboard.

Colemak: an optimized keyboard layout.

Asetniop: a method for chorded input available on various devices.

It's still in its extremely kludgey infancy, but http://powershame.com might be useful for people trying this.

I'm re-visiting linear algebra - I took a course in college, but that was more of a instruction manual on linear algebra problem solving techniques and vocabulary than a look at the overall theory. I'm reading Linear Algebra Done Right, and was wondering if anyone else is interested.

This book starts from the beginning of the subject, assuming no knowledge of linear algebra. The key points is that you are about to immerse yourself in serious mathematics, with an emphasis on your attaining a deep understanding of the definitions, theorems, and proofs.