WoW Forever Legacy points

Legacy is an account-wide system that rewards levelling, professions, PvP and dungeons. Points are shared by all your non-Hardcore characters, and each character spends them separately (Blizzard: Get to Know the Legacy System).

Fact	Detail
Unlock	Your first Legacy point: level 25 on any character, 150 in a non-gathering primary profession, or exploring the whole world map
Open it	Shield icon on the menu, or the Y key
Challenges at launch	65 (one point each)
Spending cap at launch	16 points per character
Most from one character	Up to 29 points, so alts are optional

Source: Blizzard: Get to Know the Legacy System.

All 65 challenges

Category	Points	How to earn them
Classes	27	Reach 25, 45 and 60 on each of the 9 classes
Tradeskills	18	Reach 150, 225 and 300 in each non-gathering primary profession
PvP	12	Ranks 3, 7, 10, 13 and 14 (5); Exalted with each battleground reputation (4); Field of Honor week 4, 7 and 10 quests (3)
Adventure	2	Explore the whole world map on one character; finish the Lord Valthalak dungeon set questline
Dungeons	3	Final boss of every level 15-25, 26-45 and 46-60 dungeon
Raids	3	Onyxia; all 13 Hyjal Summit bosses; all 8 Barrow Deeps bosses

Perks for levelling (Adventure tree)

Perk	Effect
Well Rested	Higher rested XP cap; rested XP builds faster
Thrill of Adventure	Small health and mana return after each non-trivial kill
Talented	Talent points up to 5 levels earlier
Frequent Flier	Cheaper, faster flights
Field Guide	Shorter 1-hour cooldown on camping features
Field Medicine	Shorter Recently Bandaged debuff (not in dungeons, raids or battlegrounds)
High Alert	Better stealth detection outside battlegrounds

Professions and Resourcefulness trees

Professions	Resourcefulness
Working Overtime: better skill-up chance	Gourmand: longer food buffs
Bountiful Harvest: extra Scarce resources	The Quick and the Dead: faster corpse runs
Bartering: cheaper vendor items	Reinforce: less durability loss on death
Performance Bonus: more Merchant's Favor	For Great Honor: more Honor
Master Chef: chance of extra cooking results	Permanence: longer party, raid and camping buffs
Luremaster: chance of extra fish	Diplomat: more reputation
Dedicated Study: daily profession boost	Reagent Economy: no purchasable reagents for class abilities

Official WoW Forever image: road through hills screenshot — Image © Blizzard Entertainment, Inc. Source: Blizzard News

Legacy rewards

Total points unlock account rewards: Replica Ironforge Air Rifle (toy), Spectral Bear Cub (pet), Spectral Bear Tabard and Reins of the Spectral Bear (mount). Blizzard has not published the point thresholds (Blizzard: Get to Know the Legacy System).

Quick levelling plan

Take Well Rested and Talented first on alts.
Add Frequent Flier once you travel by flight path a lot. See flight paths.
Each class you take to 25, 45 and 60 adds a point. See the level cap page.

Hardcore: not at launch. Hardcore challenges earned later count in every ruleset, but other rulesets' progress won't carry into Hardcore (Blizzard: Get to Know the Legacy System).

Sources

Blizzard — Get to Know the Legacy System
Blizzard — Deep Dive panel recap