MCS_ 3rd group of cs professional

Sir, I hope you are doing good... I have purchased classes for june 2022/Dec 2022 attempt [ recorded one]... But due to some reasons didn't saw your classes yet now I have started to watch your classes to give attempt in Dec 2022 now I have all 3 subjects editions 2 books of cs professional 3rd group... Now my question is whether I shud go ahead with same books specially for MCS..As u said in you recent video that don't refer edition 2 books of MCS for Dec 2022 please let me know is their are drastic changes in edition 4 compare to edition 2 and if yes then please give suggestion how do I manage as lectures which I will abt to start is as per edition 2... Hence will my time get wasted ..will you provide me the link of relevant lectures link now I have not even started to watch it..? please suggest me