A Terrible Twist of the Truth
Character advancement is covered briefly on p.31 of the Hero’s Guide to Faerun. Please read that thoroughly before considering advancement. It’s basic common sense approach that makes your character have to account for where acquired knowledge or skills originated from (i.e. training, observation, reading, etc…) as well as alters the amount of XP required to advance. The chart there is different than the standard advancement chart.
Please also note that when receiving XP, some of that total may be carried over for future characters should your current character depart permanently or perish. This further detailed under character creation.