Hi there - wee is commonly used in Scottish speech in place of little.
examples could be
my wee brother/sister ( in this case meaning younger - your brother might actually be taller than you, but he's still your wee brother!)
It's only raining a wee bit ( meaning little)
Would you like some cake? Oh, ok but just a wee bit !
I'm a wee bit confused
The wee ones - meaning the children ( of any age)
I'll have a wee think and see if I can come up with any other examples or usage...hope this helps in the meantime :-)