IFRS 15

Hi I am struggling here, on the website the IFRS15 is listed as being examinable, however i find the notes and the video lecture to be incredibly summarized for instance, when reading through the standard there is mention of consideration and steps one should take to formulate the TP after constraining the variable consideration, this is not attended to in much detail although the video is helpful what resources would you suggest i use to master this standard? and what level of knowledge would you say is required here as well?