Loosen bolt from negative terminal with a wrench. Repeat process on positive terminal. Remove bracket surrounding battery. Pull hook out from bottom of the bracket. Bracket will come out in one piece with a hook on either end. Remove plastic covering around the battery. Remove the old battery. Dust off terminals with a toothbrush or rag. Remove the plastic handle and any cover from the new battery. Make sure your new battery fits the make/model of your car. Put the new battery where the old battery was located. Put bracket over new battery and tighten. Connect and tighten negative terminal with wrench. Repeat with positive terminal . Make sure battery and terminals are tight, and attempt to start your car