brake issues

[licenseless]

so this is how it started...

i picked up the truck from the new owner... then drove it to my house... she sat for a few months (i started the motor but never drove her around)

when i got all the paper work done and was able to drive her i drove her down the road and back and the front left rotor was so hot it was glowing red... (didnt even drive a mile) all the other rotors had no sign of this at all...

so i let it cool off (the next day hahahaha) and then i pulled off the caliper and noticed she was siezed... and since its 12 bucks for a rebuilt one i just bought it and put it on.

bled the brakes and drove it around... problem seemed to go away... but i didnt drive very far either...

so the next week i drove her to work... and the front left seemed to have that problem again (after about 12 miles of driving) but it wasnt that bad... so i figured it was just the fact that the truck hadnt been used much...

so then on my drive home... i on a long stretch of road... ( about 8 miles long with out stopping or needing the brakes) i smelled the brakes... and immediatly pulled over... the ****ing rotor was glowing so bright it was insane... it was glowing and i didnt use the brakes to pull over... i used the tranny and the e brake which is for the rear of the car...

i am assuming i have a warped rotor that is rubbing against the brake pad enough to create friction...

so unless anyone else knows what this is that is causing this... please speak up...

i already have 2 new front calipers rotors and brake pads in the mail (for cheap... like 100 bucks for all of it I LOVE JCWHITNEY)

but... if anyone knows what else could be causing this... plese inform me...