Children learn to talk between the age of 1-3 years. How can you help them pick up speech? Creating an environment where talking is frequent is the first step. You need to use a lot of action, expression and objects to help your child understand speech. Enjoy these years of your child's early years and watch him/her grow every day. As you look back a few months you will be amazed at how fast kids learn. However, the real magic is learning language from absolute zero and no other language for reference. We adults can't do that!
Here are some videos by experts and parents:
Stages of Speech Development
What you can do
For Speach Delays
On a lighter note, here's a funny video of conversation between a father and his 1 year old son.