Thanks Alex. TK is very important IMO. However, it's also important to know how to answer certain questions. Even in something as simple as PPL exams I've found quite few questions where one just has to answer what EASA wants to hear rather than what's actually right. So while the TK is undoubtedly a basis for everything, knowing how to master the exams I consider as a vital add-on.
That's why I desperately need some opinions on how important are revision days after each module and instructor's support during the DL.