On a related note, here are some interesting articles.
Most if not all IDEs come with syntax highlighting. It makes it easier to read your code and gives you less headache when debugging. Sometimes I share code snippets right here on my blog and until recently I wasn't really paying attention on how it looks. Since most of the time it is my code, I have no trouble understand it it, even though it looks like a screen shot from Notepad.
Understanding Cascades and Specificity in CSS
When you follow a CSS tutorial, you are presented with the simplest situations possible. When you want to change the color to a paragraph, write some pseudo code including color: red and the color changes to red. This is simple enough. However the moment you start creating styling for a whole website, you realize that things don't work the way you want them too. Sometimes you set a color to white, but it shows black. Other times, no matter how much you try, any of the styles you are applying simply refuse to work.