Watching rugby is the second best way to understand it, with the first being playing in a game. Watching Vines and Instagram videos are good ways to see snippets if you don’t have the time to sit down and watch an 80 minute game.
The vine shown is an example of a high tackle. Take note on how the tackler is grabbing onto the shoulders and the tacklee’s head and neck are going down, which could lead to neck and spinal injuries.
http://https://vine.co/v/5J69jepxjEt
The video bellow is a good example of the back line having fast hands to gain as many yards as possible before getting tackled. The back line getting steep after a ruck helped them get the ball out quicker.
In this next video, one of the players is able to get by the defense by punting the ball and running up to catch it. He then is able to make a breakaway and score a try.