Destiny 2: The Witch Queen – Power leveling guide
Destiny 2: The Witch Queen has introduced a new Power level cap for players to work towards, which means that everyone has to begin the grind again to prepare themselves for endgame activities.
The manner in which you level up has not changed. You still have to grind regular activities until you hit the soft cap, then seek out Powerful and Pinnacle Gear to edge past that towards the Power and Pinnacle level caps.
Here is a complete breakdown of Destiny 2 Power levels in The Witch Queen and Season of the Risen, and the most efficient ways to increase your Power.