I've been cycling to work for about a month now, and I've enjoyed it very much. But I have basically no idea what I'm doing. Seriously, I only noticed that my bike had a higher gear about a week ago.
I've been trying to be good about traffic law, obeying lights etc., no riding on pavements. I have a helmet and a high-vis jacket. I haven't been riding at night because I don't have any lights (and it makes me nervous). But I'm American, and have never really ridden for actual transport. So I don't know all the traffic law here and am completely clueless about cyclist etiquette. And roundabouts terrify me. (I'm mostly over it.)
What should I know? Any laws that are non-obvious? Things to look out for in the city? Equipment I should get and keep with me? How to be considerate to other cyclists? Useful resources?