Cheers, luckily I don't need Google to translate
The thing is you don't 'study' karate or any martial art, you 'do' it. it's not an academic subject you study in the way you do maths or geography but a very physical learning, you may know learning but martial arts is always going to be different, you can't compare it with classroom learning. Your profile says your 25 so I'm wondering why you haven't learnt any Krav Maga already for SD.
(Just as a side note my mother was taught KM in Israel at about the time of the War of Independence, she was Haganah )