This workshop will provide participants with a basic understanding of brain growth in the first five years of life. We will also showcase the latest techniques used to study infant brains, including ERP and MEG. To demonstrate neural development, we will focus on I-LABS work that describes how the baby brain changes as a function of early language learning. Finally, we will end with a discussion about the types of environments that promote brain development in young children and how these quality environments affect later success.