Each race has choseable abilities that make them better at certain tradeskills in some way, if and only if they choose a specific racial tradition that becomes available at certain adventuring levels. Some of the bonsuses are a reduction in power use for your crafting abilities, some give increased success chance, and some give addition crafting skill (which improves your success chance).
NOTE: This information taken from the BETA server on November 9th, and MAY CHANGE when RoK goes live
ARASAI
Neriak Precision: +5 Artificing Skill (Jeweler)
Transmogrify +5 Transmuting Skill (Transmuter)
BARBARIAN
Brewmaster: +5% Success Chance for Provisioners
Herbology: +5 Chemistry Skill (Alchemist)
DARK ELF
Poison Crafter: +5% Success Chance for Alchemists
Pursuit of the Arcane: -10% Power Cost for Sage Reactions
DWARF
Weapon Forger: +5% Success Chance for Weaponsmiths
Master of the Tumpy Tonic: +5 Artistry Skill (Provisioner)
ERUDITE
Scholarly Pursuit: +5% Success Chance for Sages
Chemist: +5 Chemistry Skikk (Alchemist)
FAE
Magical Teachings: +5 Scribing Skill (Sage)
Forest Knowledge: +5 Fletching Skill (Woodworker)
FROGLOK
Fervor of Marr: -10% Power Cost for Armorer Reactions
Zealotry of Marr: +5% Success Chance for Weaponsmiths
GNOME
Forge Invention: -10%? Post Cost for Weaponsmith Reactions
Chemical Calculations: +5% Success Chance for Alchemists
HALF ELF
Ayr’Dal Adornment: +5 Artificing Skill (Jeweler)
Gift of the Faydark: +5% Success Chance for Woodworkers
HALFLING
Niami’s Tutelage: +5% Success Chance for Provisioners
Pants Patcher: -10% Power Cost for Tailor Reactions
HIGH ELF
Gilding of Felwithe: +5 Artificing Skill (Jeweler)
Estoric Study: +5 Scribing Skill (Sage)
HUMAN
Diversity: +5 Tailoring, Artificing, Chemistry, Artistry, Sculpting, Fletching, Scribing, Metalworking, and Metal Shaping Skill (All Primary Trades)
Clothier: +5% Success Chance for Tailors
IKSAR
Whipstitch: -10% Power Cost for Tailor Reactions
Dark Medicine: +5 Chemistry Skill (Alchemist)
KERRA
Gift of the Land: -10% Power Cost for Alchemist Reactions
Timber Shaper: +5 Fletching Skill (Woodworker)
OGRE
Oggokian Trade: -10% Power Cost for Weaponsmith Reactions
Rallosian Readiness: +5 Metal Shaping Skill (Armorer)
RATONGA
Poison Play: -10% Power Cost for Alchemist Reactions
Instruments of the Underfoot: +5 Metal Shaping Skill (Armorer)
TROLL
Troll Gourmet: +5 Artistry Skill (Provisioner)
Mender of the Mire: +5% Success Chance for Armorers
WOOD ELF
Gift of the Faydark: -10% Power Cost for Woodworker Reactions
Faydwer Fashions: +5% Success Chance for Tailors
SARNAK
Weapon Production: -10% Power Cost for Weaponsmith Reactions
Carpenter's Touch: +5 Sculpting Skill (Carpenter)