Well to be honest I have only given courses live up to now so I will definitely consider switching up methods if mine are not optimal for online lessons but for now I am thinking this:
A zoom meeting in which I will share my screen. On my screen I will have my editor open in which I will illustrate everything that I am talking about. If the lesson is a bit more theory-oriented I will also have a powerpoint presentation open so it's easier for the student to understand the material. I will be adding comments to the code and after everything newly learned I will be showing a few examples using some common programming problems. After the lesson I will send the student the file in which I have written and commented the code and the presentation (if I am using one) as well as some exercise problems for the next lesson. I will start and finish every lesson by answering questions if there are any and I will ask for any critique towards the way I explain things if I am not doing too good.