Get to know your class

Here is a page with all the Class/Sub-Class Skill Trees. Also you may have noticed three stats attached to your gear: [b]Discipline[/b] Increases the recharge rate of your supercharge ability. [b]Intelligence[/b] Increases the recharge rate of your grenade. [b]Strength[/b] Increases the recharge rate of your melee ability. Be thinking about which of these you want to stack. There will be a cap on all of them, although I'm not certain if it has been determined yet.