It is the same with babies all around the world. They start with certain sounds, then murmuring and muttering some syllables, joining them, and uttering the first short words. Then they create short ( usually ungrammatical) sentences, parents correct them several times until they adopt a proper phrase or hort clause. So, it is the same with the babies and the adults - repeating, practicing, using the language freely in a positive and supportive atmosphere, and one begins to master his native language, and the L2 as well. All the best!