The Art of Command Line
We all live in the shell. (Yes, if you’re not geekish that sentence makes no sense). And you can always learn a little more and some special trick to make your day. Here’s another reference.
Great collection of Public APIs
Well I always look at ProgrammableWeb.com but it’s becoming more and more cluttered with ads and whatnot. Also there’s so much in it, I think it’s totally uncharted.
Collection of free programming books
I hope these are all public domain. Can’t check them all. But I assume so because it’s on Github
Build your own … whatever!
Build your own… operating system, programming language, web server, etc.
Posted from Diigo. The rest of my favorite links are here.