Ooooooh ummm, left it a bit late, tut tut. This is a bit late, yes, but I love learning languages and you're going to need to study, but don't over do it.
I can only stuff I try - one is association, this is difficult sometimes, but if you find a word you can associate, it's useful, its a technique good for naming names (got me through my AS levels that did) A simple example would be 'ist' in German - 'ist' = 'is', Swedish 'Hej' (Pronounced like'Hey') = 'hello'. But even words that don't relate, you can buy a meaning into it. Like 'Sohei' (dunno if that is the English spelling) is Chinese Mandarin for 'Stupid' - you could make that into a memorable sentence that creates a relation. "He's so high (sohei) he's stupid."
You'll need to learn the grammar and syntax - look at the rules more than anything - learn them and then grab a dictionary and try to write them out with the grammar rules and use that to memorise them. So we have in the present tense 'Subject verb object' as an example, "Jack has a dog" - In Japanese it is 'subject particible object verb' - "I fish am" - or "Watashi wa sakana desu" - just to give you an idea. Keep writing these with words you wish to learn, change the tense, change the objects and subject, chuck in a plural - just keep playing with the language until you get the hang of the grammar.
Once you've done that, you just need to learn the words (in some case, and letters or symbols) and pronunciation, there are many ways to learn these - I gave one at the top, another good one is to label each object in your room with a word and when you use that object or look at it, say it in greek, when you see something or even think of something, try 'what would that been in greek?' carry a dictionary with you if it helps - so if you don't know or forget, you can look it up.
And of course, take it easy, don't panic and don't cram in knowledge, you'll overflow and forget things.
Hakuna Matata
