if the car doesn't start @ all... either call the two truck if you are in Michigan, Us.
OR take the battery out of the car and take it to a mechanic to load test it... They will tell you if the battery is dead or whatever.
Now I am pretty sure you are gonna ask how should I get started to take the battery out?
Get a 10 mm wrench... take out the negative terminal first.. and then the positive terminal. There are either J bolts or Hold down bolts holding the battery... Open them and the battery is all yours..