I enjoy dripping. It gives me a consistently good hit--carts and cartos tend to get weaker as the juice gets vaped out. It also gives me a sense of timing back--three drops are used up in right about the same amount of time it took me to huff down two analogs. So I know when to go back in from break.
You may not want to do this if your 510 kit uses manual batteries; you run the risk of shorting them out. Otherwise, just drop three drops onto the bridge of your atomizer, then vape it until you get a slight metallic/burnt taste from a dry atty. Then repeat. If you're not sure if you want a drip tip, then try DoctorVapor's advice and use the grip from a common ink pen on the end of your atty for a drip tip before buying.