1st year apprentice here. I'm looking for instructional videos and other material to try to improve my progress in my job. I'm adept at waters and installing fixtures. I have recently started doing pvc for the 2 plumbers I work for. "2 separate companies" ones a filler when the others slow. I would say the thing I would like to improve on is wet venting and venting code going up and out the roof. I reside in south dakota. I just want to expand my overall knowledge. Also. Any general tips or advice for work would be awesome. We run pex us wirsbo fittings. I want to hear experiences that you guys wish you knew before hand or things that would have saved you Grief if known before hand. Thanks.