This is kind of a follow up question to this post: How important is flirting within the dating scene?

I have never in my life flirted with someone. Seeing how I’m still single I figure I might want to change strategies. So what is the best way to show someone you’re romantically (or sexually) interested in them?

And if you can, please include examples.

Note: I am a guy, straight, have a lot of hobbies, and finding women is no problem for me.