Early Childhood Education looks very different in many countries. Reasons for this include:
When choosing a country to research, think about the full context that can impact the need and expectation for what and where children learn. For both library databases and an internet search, use the phrase "early childhood education and [country of choice]" and "preschool teacher education and [country of choice]. There are a variety of sources available, both scholarly and governmental, that will have the information you need.