One of the amazing factors of character creation in Skyrim is the freedom and versatility of choosing a class, or classes, for your character to master. Each class has skills that characters' can become proficient in. Players' may choose to stick to certain classes to fit their characters, or become a master of all skills and classes.
Characters who choose to pursue a warrior or fighter class build will want to focus on the skills: Two-handed, One-handed, Block, Heavy Armor, Light Armor, and Smithing.
Archer and rogue classes put an emphasis into the select skills: Sneak, Pickpocket, Lockpicking, One-handed, Archery, Light Armor, Block, and Speechcraft.
If you pursue the class of a mage then your main focus will be on the school of magic skills: Alchemy, Illusion, Conjuration, Destruction, Restoration, Alteration, and Enchanting.