I get them started early, on heat, as they have a long growing season. As the plants grow, don't pot them on into too big a pot each time. They don't like their roots to be surrounded by cold wet soil. If you're keeping them in pots, 8" is plenty big enough for the final size. One year we planted ours out in the tunnel but the hen and chicks we also had in there demolished every fruit as it turned red!)
They can take more heat then tomatoes, and as said above, don't need quite so much watering. As with tomatoes, start giving them a potassium rich tomato feed once the first flower buds appear.
We spray the flowers with water, partly to aid pollination but also to keep the red mites at bay.
Pick the chilies as they ripen, to make way for more.
We haven't managed to grow the Scotch Bonnet types which need a really long growing season, but have tried all sorts of other varieties, and from cool to very very very hot.
Depending on where you live, and whether you can keep them warm, you can over winter the plants. Prune them well, then they will get going early in Spring.