All my power windows on my 06 quadcab are powerless. There is no power going to the main Driver Side Power Window Switch. Checked all fuses under the hood. Wondering if there is some type of fuse/circuit breaker/relay inside the truck. HELP!!!

 

Your '06 is a CAN bus system. The switch does not control the window with power. It sends a bus message to the cluster (CCN) that then request the TIPM to apply power directly to the window motor. You need a scan tool to see if the request is being recieved by the CCN and the TIPM, then you verify the TIPM is actually outputing the required request.
Don't go probing around with a test light. Only use a DVOM when testing.