Stop hunting is pretty easy, not much to learn. Just find any newbie trading resource and see where they recommend putting their stop loss. The just do exactly the opposite.

Where someone would have a sell stop under the low of a candle pattern for example, you just put a sell order in the same place and wait... Guaranteed most people will have their stops in the same place so when they all get hit at the same time it's creates considerable momentum in your direction.

Finding trapped traders is a little more tricky but it relies on the same principle, trying to find people that are in trades but the trade is going against them, and where their stops are likely to be. Also, you can find people who are trapped out of a trade, a trend or something that they want to be in but missed it, so look for the re-entry points and jump on the momentum when their buy orders get hit.

The general idea is to stop thinking like a retail trader (who all lose money) and start thinking like a professional or institutional trader (who all make money). You just need to put yourself on the other side of the fence and try to see things from the other side.