If you have no idea where to start, the age of your child can give you some information, what could be of interest for your child.
My child is an infant. It can't walk and is roughly under 1 year old.
My child is a toddler. He or she is more than one year old and starts to walk or is able to. He or she wants to discover the world in her way and in her pace.
My child is a preschooler. He or she is between 3 and 5 years old.
My child is in Kindergarden. He or she is around 6 years old.
My child is in elementary. He or she is older than 6 and goes his or her first years to school.