I would highly recommend teaching baby sign language to your child. There are great benefits to it. First, your child will be able to communicate with you earlier (e.g. asking for milk, telling you they are "all done" with a meal or toy rather than getting frustrated and slam things around, etc.). Second, at least in my experience, their vocabulary explodes early on since they are more engaged in communication. Also, I believe it helps with motor coordination since they are articulating with their hands. Some folks used to worry about delayed speech and development, since it feels like you are teaching your child to be deaf/dumb, but it really doesn't work that way. Since you are making the sign every time you speak the word to them, they get both sets of input.