This command will add the specified amount of experience points to the skill with the specified ID for your character. Note that the amount experience required to level up each skill differs - make sure that you do not add too much.
advskill [actor value id] [amount]
|Actor Value ID||The ID of the skill you wish to advance. Skill IDs are their actor value IDs. See our list of actor values.|
|Amount||The amount of experience you wish to add to the specified skill.|
advskill Pickpocket 100
The above command would add 100 experience to your character's pickpocketing skill.
advskill Conjuration 10
This console command would add 10 XP to conjuration for your character.
This command is the same as AdvSkill - it is simply a longer version (alias).