When you first become a mom, the classes posted on the bulletin board at your local coffee shop sound great. Mommy and me music gym for newborns and toddlers. Mommy and me music for toddlers on up. New mommy luncheons for moms of infants. And while working your newborn's muscles and getting your toddler's ear attuned to music are great, there are some truly valuable skills that someone should teach new moms to make their lives easier over the next 18 years — things like cooking dinner with a toddler clinging to your leg and surviving your time on the PTA. Read on for the 13 classes we wish someone had offered when we were home on maternity leave.