When you reach Level 5 you'll start studying your skills, Skills are taught at the Iron Gate Guild -- thewarehouse, as they call it-by the east gate, or the Black Anvil Guild - it looks like a blacksmith's shop if you look east from the square at the north gate, Now, this is important you'll need SP to gain your skills, SP is short for skill points, and they're earned along with experience whenever you defeat a monster,SP are deducted whenever you learn anew skill,You can check yourSP by clicking the Character Status button, then on the Status tab in the window, Of course, the number of SP you need will vary, depending on the skill you're after.
I want to know more about skills.