I don't see what the problem is here. So there are a handful of symbols and another handful of metar/taf abbreviations to learn. Just learn them. There aren't that many. You'd have them learnt in the time you're spending on this thread. Don't you WANT to know as much as possible? Why settle only for the bare minimum to get you through the exam?
As I said before, if you really have that attitude then maybe flying a plane is not for you. Sorry but it has to be said.