This is a great DVD by the Home Depot. It is Plumbing Projects 1 2 3.

Expert advice from the Home Depot. It includes under the topic of projects, putting in a sink, replacing a toilet, adding a stop valve, replacing a kitchen faucet, replacing a bathroom faucet, cleaning a trap, replacing a disposer.

Techniques included, soldering a copper pipe, soldering a valve in place, compression fittings, joining PVC, joining PEX, cutting pipe.