From the moment of birth a baby is getting prepared both mentally and physically to produce speech. Either they suck, scream, cry, babble, coo or giggle, they are preparing to speak. All sorts of games intended to imitate different sounds or just to make a noise help them to get ready to start speaking some day.
But the preparation of the organs isn`t sufficient. The development of speaking abilities is closely connected with mental development and communication with the environment and people surrounding a baby. From their birth babies need to be immersed into a language. Words fascinate babies. Speaking to the baby from the very birth is the best way to prepare him to speak. Talk to him, sing him songs, read him fairy tales, play with words, it doesn`t matter if your baby understands you or not!
Being born a baby has got an ability to speak any language with no exception, but as time goes by they "specialise" in speaking one or several languages he hears.
Initially learning to speak comprises immersion and imitation.