Here is one of my favorite youtube channel about Plumbing that I wanted to share with you. There are a lot of tutorials here and also they have DIY instructions for plumbing. They upload weekly videos here.
Their youtube channel is called Plumber Parts: https://www.youtube.com/user/plumberparts/videos
Here are some of my favorite videos.
- Plumbing Disaster
2. Big Plumbing Questions Answered
3. Ask the Plumber: Plumbing Tips