Nice articles to spend some time.
Get intoxicated with all kind of crazy languages in the world of computers.
<a href="http://www.tuxradar.com/content/programming-languages-melt-your-brain" target="_blank">http://www.tuxradar.com/content/programming-languages-melt-your-brain
A quite useful vim guide.
<a href="http://www.terminally-incoherent.com/blog/2009/03/03/vim-cheatsheet-revisited/" target="_blank">http://www.terminally-incoherent.com/blog/2009/03/03/vim-cheatsheet-revisited/