One of the best things about CoH is that you can play how you want. There's so many options as you level up your character, that you don't have to stick to any specific build or play style. Build your own unique character as you level up, and cater it to your personal tastes and play style. As long as you're having fun playing as your character, that's all that matters really.
One of the other things which makes CoH so great is the community. Everyone is so friendly and helpful. If you ever need anything, there's always someone who'll be happy to help.