For an AT, here are most of the main steps:You can do it yourself but will need to have a few tools, and will need to raise the car "evenly", so both front and back are raised. *Critical tools to...
It's slightly to the left of the battery, and deep. If you look at the battery connectors/cables you will see that the positive one (red) has an extra wire that is thinner than the main one, follow...
There should be a globe looking object in the top right side undernearth the hood. Be careful when you do it though because if you don't give the car time to cooldown it could spray out when you open...
Its the round ball shaped plastic container on the drivers side under hood; it usually has a blue twist off cap. If your vehicle was just recently running be careful when unscrewing.