I've been playing with the thought of wearing head scarves but I never really knew where to start. I bought one of those black versitle scarves from the beauty supply store and didn't really know what to do with it. The day I wore it my dad actually thought that I was having a bad hair day (apparently the only time women wear headscarves is when their hair isn't done). One of my older mentors told me that she goes to Walmart and buys their fabric and wraps it around her head, which I'm sure is a lot cheaper than going out to purchase an actual scarf.
Here is a video tutorial I found for styling your head scarf into a simple bun.