Coming from WoW and want to know what class will fit you? I made a guide just for you.

This is a good start for people. It's important to note, though, that not all Rift specs are meant to be used for the same thing. Stormcaller is an AoE soul almost exclusively. Thunderchickens would be well advised to take that into consideration. On the other hand, since there are so many role slots, you don't have to pidgeon hole yourself. For example, Rift mage encompases Warlock, Shadow Priest, Thunderchicken, Fire Mage and Ele Shaman all at the same time. Until you start to raid, you can probably come up with a spec that will closely associate with the play style of any of those specs from Wow. As you learn about Rift though, you'll see how it diverges and you'll shrug off the WoW paradigms.

WoW Class/Role	Primary Functions	RIFT Equivalent
DRUID: Restoration	Heal-Over-Time, Large AoE Heals	CLERIC: Warden
DRUID: Balance	Ranged Magic DPS, Complex Casting	MAGE: Stormcaller/Elementalist
DRUID: Feral Tank	High Avoidance/Mitigation, AoE Threat	WARRIOR: Warlord OR ROGUE: Riftstalker
DRUID: Feral DPS	Small Builders to DoT and a Big Finisher	ROGUE: Bladedancer
PALADIN: Holy	Large Single Target Heals, Buffs	CLERIC: Sentinel
PALADIN: Protection	AoE Threat, Blocking, Self-Healing	CLERIC: Justicar
PALADIN: Retribution	Magic-Based Melee Damage	CLERIC: Shaman or MAGE: Harbinger
HUNTER	Ranged Physical DPS, Pets	ROGUE: Marksman/Ranger
WARLOCK	Damage-Over-Time, Life Drain, Undead Pets	MAGE: Warlock/Necromancer
MAGE	Elemental Damage, Massive Burst	MAGE: Pyromancer/Elementalist
PRIEST: Holy	Well-Rounded Healing, Buffs	CLERIC: Sentinel
PRIEST: Discipline	Shields/Damage Prevention, Single Target Heals	CLERIC: Purifier
PRIEST: Shadow	Single Target Magic Damage, DoTs, Debuffs	CLERIC: Inquisitor/Cabalist
WARRIOR: Arms	2Handed Weapons, Burst Damage	WARRIOR: Champion/Riftblade
WARRIOR: Fury	Dual Wielding, Sustained Damage	WARRIOR: Paragon
WARRIOR: Protection	Physical Tank, Single Target Threat	WARRIOR: Paladin/Reaver
DEATH KNIGHT: Frost	Debuffs, Dual Wielding, Magic Damage	WARRIOR: Riftblade/Paragon
DEATH KNIGHT: Unholy	DoTs, Undead Pet, Magic Damage	WARRIOR: Riftblade/Beastmaster
DEATH KNIGHT: Blood	Self-Sustaining, Anti-Magic Tank	WARRIOR: Void Knight/Paladin
ROGUE: Assassination	Stealth, Attack From Behind, Dual Wield	ROGUE: Assassin
ROGUE: Subtlety	Stealth, Rapid Movements, Avoidance	ROGUE: Bladedancer/Riftstalker
ROGUE: Combat	Dual Wielding, Sustained Damage	ROGUE: Nightblade/Bladedancer
SHAMAN: Elemental	Large Magic Burst DPS	MAGE: Pyromancer/Elementalist
SHAMAN: Enhancement	50/50 Magic/Physical Melee DPS	WARRIOR: Riftblade/Paragon OR ROGUE: Nightblade
SHAMAN: Restoration	Balanced Heals with Passive Healing	CLERIC: Sentinel/Warden
RIFT Classes With No Equivalent
WARRIOR: Tempest	Ranged Magic Attack-Power DPS
ROGUE: Bard	Short-Term Buffs, Varied Skills (Damage/Heals)
ROGUE: Saboteur	Debuffs, Massive Damage Spikes Late in Fights
ROGUE: Tactician	Buffs, Varied Healing Abilities, AoE Damage
MAGE: Archon	Massive Buffs/Debuffs, DoTs, Moderate Damage
MAGE: Dominator	CC Specialist, Some Damage and Buffs
MAGE: Chloromancer	Damage Based Healing, AoE Healing
CLERIC: Defiler	Damage Based Healing and Shields
CLERIC: Druid	Magic-Based Melee Damage, Varied Pets