dear Justyna,

As I said, it differs per country.
One of the best suggestions I can give you is.....
OBSERVE normal children ( babies and all age groups), play with them. Get to know what normal development is about FIRST.....

Try to volunteer somewhere where you have to look after children, change their nappies, walk, talk, play with them etc etc..... you will learn a lot doing that....
The more normal ( with all its variations ) movement you see, the more you will learn. ´

When you have the chance to do a course, do it

When you have the chance to follow a paediatric physio doing his/her work, do it.

Good luck,
Do not stop studying.

AND please do not make the big mistake of trying to "exercise for the sake of the exercises" OBSERVE and THINK first. The child has often found the best solution him/herself. OBSERVE and LEARN from it.

Esther