dear Fyzzzio
Lots of information regarding development of the young infant can be found on:
SfA Resources for Parents and Teachers | skillsforaction.com & NYU Infant Action Lab
Go to www.canchild.ca for lots of information regarding various disorders and the test possibilities.
We have become more reluctant to using 'milestones' as we now know that the development of a child can be very variable and still considered normal.
kind regards
Esther