Breaking issues plz help this is my D/D!!!!

[cmyc5575]

Ok I bought this truck back in May as a bday present to myself and there was already an issue with the ds caliper engaging late and causing the truck to pull to the left. So no big deal I would just replace the caliper and that should fix the problem. I havent gotten around to doing that yet, but my issues that I am havnig now has gotten worse. When I am driving the truck and hit the brake to slow down the brakes work just fine but, when I start taking off again I can feel the front brakes are still grabbing and will not release until I hit the brake a few more times. This in turn is causing the truck to bounce and skip when I'm driving. Any advice or suggestions to what I need to do is much appreciated.