I made a bunch of mistakes or ineffective attempts to do things during my first 50 dives because I had nobody to whom to ask random questions. When I saw someone else do something amazing or I stumbled across a way that works for me...I'll put it here so maybe you can use it.
Some are good. Some suck. Some have come and gone. This list will get you started and are reliable enough and well filmed enough to be enjoyable and educational.