tips for giving head

So my friend and I were talking and we were talking about dicks and stuff, which is just about all we talk about because that's who he his, and he asked me if I'd give him head.

Me a person who hasn't even kissed anyone (although is interested in sexual experiences/encounters) has no idea what to do. I'm thinking of taking him up on it, does anyone have any pointers for someone who's never given head?