Two Worlds

There are various skill trainers in cities and village who can unlock skills for you. The cost varies, depending on the skills level, obviously if you're only unlocking it vs advancing it, it will be much cheaper.

Trainers have random generated names, but if you go to these locations, you'll find them.

Ashos: Earth Magic, Sneak, Stealing, Water Magic

Brotherhood Outpost: Balance, Berserking, Deadly Pirouette, Double Blade, Knock Down, Stun, Unhorse Strike

Camp Site (near Komorin Village): Death Strike, Stealing

Cathalon: Balance, Berserking, Blinding Arrow, Burn, Deadly Pirouette, Disarming Arrow, Double Blade, Earth Magic, Feint, Knock Down, Multi Arrow, Overdrawing, Piercing, Pull Shield Strike, Starting Draw, Stun, Sowrd Break Strike, Unhorse Strike, Water Magic

Eastern Army Camp: Balance, Berserking, Blinding Arrow, Deadly Pirouette, Disarming Arrow, Double Blade, Knock Down, Multi Arrow, Piercing, Stun, Unhorse Strike

Leaning Elm Inn (near the Western Army Camp): Berserking, Deadly Pirouette, Death Strike, Double Blade, Stealing, Stun, Unhorse Strike

Qudinar: Balance, Berserking, Blinding Arrow, Deadly Pirouette, Disarming Arrow, Double Blade, Earth Magic, Knock Down, Multi Arrow, Piercing, Stun, Unhorse Strike, Water Magic

Rovant Village (near Gorelin Village): Alchemy, Necromancy, Stone Skin

Tharbakin: Earth Magic, Water Magic

The Enclave: Alchemy, Necromancy, Stone Skin

Vesit's Corral (near Komorin Village): Overdrawing, Starting Draw


If you'd like a visual aid, please see this map.

http://imgur.com/1NXQ2r8

Thanks to the folks at the wiki for forming the list of skill locations.