after jump-starting my car i left it on for half an hour then jumped back in my car put the gear on "drive" then drove the car about 3 meters when it suddenly just died. I opened the bonnet up and the was steam coming from the radiator..i think it was?
anyway after i let it cool down for 15mins,i jump-started the car once again and moved it 3meters back into my parking spot, my temp gauge is in the middle and one half of my friends are telling me to pour water and the other half are telling me to buy coolant whatever that is?! but that would mean me driving to buy it..what should i do??HELP need to get to work and pay em' bills

anyway after i let it cool down for 15mins,i jump-started the car once again and moved it 3meters back into my parking spot, my temp gauge is in the middle and one half of my friends are telling me to pour water and the other half are telling me to buy coolant whatever that is?! but that would mean me driving to buy it..what should i do??HELP need to get to work and pay em' bills