When it comes to roles, you can choose to be a healer, tank or controller. Everyone is dps, regardless of roles. So you can be a dps/tank, dps/healer and dps/controller. Tank can have fire or ice based powers. Healers can have nature or sorcery based powers but I am unsure about controllers, all I know for them is they can regen you your powers.
Be sure yo know exactly what role you're going to be and learn it well. Best weapons I can recommend are as follows:
For close up/melee attacks: Staff, Double Handed Hammer, Dual Wield Swords.
For ranged attacks: Dual Wield Pistols, Bow, Rifle.
Those bad boys do some serious damage. Especially if you get the purple versions of each. In beta I had the purple of the staff, hammer and swords. The first two were able to give out 87.1 dps and the swords a staggering 97.6 dps. The other great about the staff was if you did the ranged attack it could hit upto 2000+ dps on someone like Doomsday. However, the devs found this out and reduced it big time. So now it does around 250-350dps.
Remember, as you level up and you pick up awesome loot for your character at that level, use them. When you do duos/alerts/raids, you'll certainly pick up new and powerful weapons and be sure to make sure they are for your role. So if you see a tank weapon, roll the dice for it. Same for healer and controllers. They will benefit you in the long run.
I am not sure if you guys will be able to read
this but that's the guide our league leader has compiled on becoming a successful tank within the game. He is one of the best tanks out there so he knows what he's talking about. Hopefully we'll have more guides like for the healers and controllers.
Meanwhile, there is this other site I found the other night. It gives good insight on the powers within DCUO. It's not completed but it gives you an idea on what you can choose for your character.
http://dcuoguide.com/
Hope this helps guys.
Less than 24hrs. I can hardly contain myself now