Getting started is easy, you only need to have some programming foundation, and it is more than enough to do abap. Especially the most commonly developed and simplest report in sap. Hr report is best written. Although it is a bit troublesome to obtain data, referencing logical database can generate a selection screen, and then you just need to grab the data, put it in an internal table and display it with alv. It is relatively troublesome to obtain rt data table, and calling sap standard function can solve the problem. In short, everything is difficult at the beginning, and every step is difficult at the beginning, but you will be very pleased after each step. ...