共23個，希望裡面會有可以幫到你的技巧。 There are 23 in total, I hope there will be some tips that can help you.
其實大多數的技巧都可以在別人的專案中找到，我只是把它們總合起來而已。 In fact, most of the techniques can be found in other people's projects, I just put them together.
