Wardens use a variety of Nature and Lightning spells, suitable for dealing Physical and Lightning damage, as well as for healing allies.
Main spells can be learned in the Talent Tree tab of the Talents interface (hotkey N). Additional spells and improvements of them can be found in the Talent Grids when the warden reaches level 10.
Talent Grids allow additional customization of a build. Some of these talents can only be found on one of the grids, while others are shared by all three of them.