S.
my duaghter has been early potty training since she was 6 months.I could write a lot of stuff here but i would suggest you go look at the www.diaperfreebaby webiste for tips on early potty learning.
My daughter is 20 mnths old and we have been catching her in the act since she is 6 months .
at 20 months she is almost potty trained.I am hoping the warm weather will help me finish it off!!
Also i donot think 16 months is too early at all to introdue her to the potty.
go for it it can be done!
PM me if you have some specific questions