Don’t assume young adults are some incomprehensible alien race (I see that on some forums).
Don’t assume that people are mentally five years old until they hit the age you think is ‘adult.’
PLEASE don’t do fashion, tech, pop culture, etc. unless you KNOW what’s going on now.
Don’t think you can write a $#%&&* book because it’s ‘just’ YA.
~ Writing advice from a YA in the NaNo fora. (used with permission)