Teach Your Baby Sign Language
by Meghan Moravcik Walbert on Offspring, shared by Me from Lifehacker on (#4YCH2)

Your baby is going to understand and want to communicate ideas and requests with you a whole lot earlier than they'll actually be able to verbalize the words. The gap between when a baby and young toddler knows what they want but can't effectively communicate that to you is frustrating for everyone involved.