Clean the male and female threads
Wrap the tape clockwise around the male threads
Start at the second thread from the end
Overlap each wrap slightly
Use 2 to 3 wraps for most fittings
Press the tape into the threads
Screw the fitting together by hand first
Tighten with a wrench if needed
Do not overwrap the tape
Do not use tape on compression fittings
Remove and reapply tape if the joint is loosened and retightened