Farzain, have you not been watch all of the lectures? If you watch them in order then they cover the whole syllabus for Paper F9.
Market capitalisation is not a method – it is simply the total value of all of the shares (as opposed to calculating the value of one share). So it is just the number of shares multiplied by the value per share.
Otherwise, it is Chapters 15 and 16 of the lectures notes (together with the lectures that go with them).