there is really no short cut to learning it
for me, i was kinda lucky coz i'm asian
(canto) and so i could recognise the kanji or ask my parents for help if i didn't get them. In school, we weren't really expected to learn them. Rather, it was our personal study thing. what i found helped was that i looked at the kanji (particularly the hard-ass kanji that looks like a black blob when you try to write them with texta) and tried to make connections between certain parts of the character.
or i may look at it and tried to get a picture out of it.
For example: 好<--pretend this is acutally difficult) i can work out that there's two simpler parts to it: 女(girl) 子(boy). As it kind of favoured (aka, "liked") in asian countries for a woman to produce a son, i kind of connected it with the kanji: like. AKa, i "like" a woman to have a son...and so on. Lol.
LOl. Yeah, my spewing crap. If making connections don't really work, just rote learn them, i guess. Look, cover, write, check, helps too
I found that only a couple of kanji are used on the exam. But learn the VERBs of kanji! if you don't know the verb, the entire sentence won't really make sense