Here is a video that teaches about traditional Thai massage. The video is quite long – almost a quarter of an hour, and it goes through different positions and techniques of the ancient art of nuad phaen boran.
There are leg and back stretches and so much more. Of course, not every person that you massage will be as flexible as the woman in the video, so some techniques should be practiced with caution and you should make sure that the person feels comfortable and is safe.
There are many different kinds of Thai massage, and this one is most similar to the Northern style Thai massage.
There is a speaker commenting on the techniques demonstrated in English, and it makes it easier to follow along and understand how to practice the techniques correctly and what to pay particular attention too.