At a young age, children develop language skills rapidly, and they quickly absorb what they hear. This is a natural process and applies to learning languages in addition to the native language(s) spoken at home. Babies can become proficient in distinguishing between languages and can learn to understand new words in different languages at an incredibly fast rate. It is never too early to begin.
There are many advantages of being bilingual or multilingual
These benefits span across socioeconomic statuses and extend beyond early childhood years. Having phonological awareness (sounds of a language) supports early literacy development. As with other areas of development, human social interaction is needed to support bilingualism and multilingualism. The attachment and bonding between children and their parents or caregivers plays a role in supporting bilingualism and its cognitive and social benefits.