370 free online programming and computer science courses you can start in March

Here are three links worth your time:

370 free online programming and computer science courses you can start in March (22 minute read)
A programmer's guide to unicode (18 minute read)
A pixel map generator (1 minute interactive)

Thought of the day:

"It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." — Mark Twain

Image of the day:

A normal credit card payment terminal on the left, a credit card skimmer on the right. These skimmers are planted within stores by thieves and used to steal credit card information — sometimes for weeks without being detected.