Restoration
Healing Touch - Heals a friendly target for X to Y. This is the Druid's main healing spell. You can only use this ability while you are in Druid form. There are times where you should have two levels of this spell available on your action bar to use based on how damaged the target is. You don't want to waste mana by using a more powerful heal than is necessary.
Rejuvenation - Heals the target for X over Y seconds. Rejuvenation is good to have active during combat. That way when the enemy is causing damage, you are healing during that time and mitigating some of that damage. If you or a party member is slightly damaged after battle, you can cast Rejuvenation to help heal the damage. Rejuvenation is also useful to cast on tanks that are pulling monsters.
Regrowth - Heals a friendly target for X to Y and another X over Y seconds. This spell is a mix of a heal and a heal over time spell. Regrowth takes a while to cast so you don't typically want to use it on yourself when you're being attacked. This spell is useful after battle or for casting on party members who are damaged but are not taking significant damage. Otherwise you will want to switch to Healing Touch instead.
Innervate - Increases the target's Mana regeneration by X% and allows 100% of the target's Mana regeneration to continue while casting. Lasts Y sec.
Tranquility - Regenerates all nearby group members for X every X seconds for X seconds. Druid must channel to maintain the spell. If a monster interrupts this spell it will cancel. This ability would be best used when multiple party members need healing at once.
Rebirth - Returns the spirit to the body, restoring a dead target to life with X health and Y mana. This spell requires a reagent.
Mark of the Wild (Powerful Buff!) - Increases all friendly targets' armor by X. At higher levels this spell adds an increase to all attributes. At even higher levels this ability also adds an increase to all resistances. This is one of the most powerful buffs in the game, making a Druid a welcome addition to a party.
Gift of the Wild (loot drop) - Increases party member's armor by X, all attributes by Y and all resistances by Z for 1 hour.
Cure Poison - Cures one poison effect on the target. Another welcomed ability when monsters are poisoning you.
Abolish Poison - Attempts to cure one poison effect on the target and another poison effect every X seconds.
Remove Curse - Dispels X curse(s) from the target. This is a welcomed ability as no one likes to be cursed!
Moonfire (DoT) - Burns the enemy for X to Y damage and then an additional X damage over X seconds. This ability gives a starting blast and then damages over time. You should use this ability whenever you're fighting the monster long enough for the spell to run its full duration. Otherwise, you're just wasting mana. Moonfire is also good for stopping runners before they get help. You can also repeatedly cast Moonfire for its initial damage instead of its damage-over-time to kill a target. This is especially effective in PvP combat.
Starfire - Causes X to Y damage to the target. The first question from a player when this spell becomes available is typically, "How is this different from Wrath?" Starfire takes longer to cast but does more damage. It's a good initial strike spell. Additionally, Starfire does Arcane damage while Wrath does nature damage. If the enemy has resistances to nature damage, Starfire is more effective to use.
Wrath (DD) - Causes X to Y nature damage to the target. This is your first available direct damage blast spell. This is useful for causing initial damage to the enemy. It's also useful for finishing off an enemy that is trying to run away.
Thorns (Additional damage buff) - Thorns sprout from the friendly target doing X nature damage to anyone who hits them. This is a mid-range timed buff that adds additional damage to the enemy in melee combat. Cast this on any party member that is tanking. Always have this up when you're in melee combat with the enemy.
Faerie Fire (Curse) - Decrease the armor of the target by X for X seconds. While affected, the target cannot stealth or turn invisible. This is a staple Druid spell that should be worked into combat the second it is available. Be sure to only use this ability when you're in melee combat with the enemy. If you're just casting spells on a monster, Faerie Fire is not needed. Faerie Fire will stack with other armor reducing debuffs.
Entangling Roots - Roots the target in place and causes X nature damage over X seconds. Only usable outdoors. This spell has many uses. You can use Entangling Roots to break up spawns (groups of monsters). Cast Entangling Roots on a monster you wish to keep out of combat, and then engage the remaining monster(s). You can use Entangling Roots in solo combat to allow you to blast the enemy with Wrath or Starfire while the monster cannot respond. Another use of Entangling Roots is to stop runners from escaping to warn their friends. Subject to diminishing returns in PvP. This is considered an immobilizing effect.
Hibernate - Forces the enemy target to sleep for about X sec. Any damage will awaken the target. Only one target can be forced to hibernate at a time. Only works on Beasts and Dragonkin. There is an increased chance of this spell breaking early.
Barkskin - The druid's skin becomes as tough as bark. All damage taken is reduced by X%. While protected, damaging attacks will not cause spellcasting delays. This spell is usable while stunned, frozen, incapacitated, or feared. Lasts Y sec.
Soothe Animal - Soothes the target beast, reducing the range at which it will attack you by X yards. The highest rank can soothe targets level 70 or lower. This ability will help you avoid combat with a beast. If there are several beasts next to each other, you can cast Soothe Animal on one, and then engage the other. This ability can also be useful for avoiding combat while traveling.