Here was the short tip from the Baby Center newsletter:
Words or word-like sounds may now be spilling out of your baby. When he chatters at you, just chatter right back. Keep your language simple but use real words. The idea at this age is to model the correct pronunciation, not to "correct" him. When he says "bah-bah" for bottle, for instance, you could say, "Yes, that is your bot-tle." He probably understands a lot more than you realise, so you can keep up your side of the conversation by describing daily activities as you do them, reading to him and singing songs.
For baby to learn a language is going to take some time. That's why it is good to start them off early. In Malaysia here where we are multi-lingual able to speak English, Malay, Chinese plus the various dialects, we really need to start to converse with our child so that they can pick up as many languages as possible. The more the merrier!
The more language one can speak, the better standing for job prospect and communication especially for work.
For now, I'm going to need a lot of patience to help baby pick up all the languages!