It's a good introductory course for system trading. I took off one star because of one drawback. Unfortunately, unlike when the course was opened, Gopax requires all the steps to be authenticated to use all the functions. Please refer to this part. Basically, coin system trading is the same, so if you search for the API of the exchange you are using on Google and listen to it by mapping, you will understand it a lot. Note: There is someone on Google who has organized the Upbit API well, so I recommend you refer to the following and listen to the lecture. https://github.com/inasie/upbitpy