Choosing and installing a child's car seat or booster seat can be confusing. These videos from Partners for Child Passenger Safety and the information contained on the site below will help you choose the right child restraint system and install it correctly.
Keeping Kids Safe During Crashes: How to Install Your Child's Car Seat or Booster Seat
There are videos. Watch them. Tell someone that has kids to get there seat installed correctly, if it isn't.