For economics just write shitloads of flash cards and make someone test you a couple times a day.
Two days and you should know it back to front
+1, also eco is pretty easy, just make sure you know it tho.
Slumdog millionaire might work for english if it isnt on the prescribed text list. That movie has a shit load of belonging related crap.
And, find some notes on eco, summarise them in your own words.
For business I found notes on bos, also since business is easy, i summarised 20 pages of typed work, in about 5 pages, written (not even neat, so not small writing), so after reading a few key words you remember everything related to it.
Does wonders