Economics is a topic that requires practice and understanding.
Sheer memorising of textbook/lecture notes based points is not
going to help you pass your exam. Probably help you gain insight
into Econs if you are considering taking it.
Thing about economics is application. No application no talk.
They give you a context, you apply. That's Cambridge's favourite
tactic across almost all subjects these years.
As for prep for JC, I think you can start by revisiting some of
your secondary school math physics and chem fundamentals. Math is
probably trigo, chem is probably stoichiometry and chemical bonding
(usu. the first/second topics), physics will be kinematics dynamics
(Newtonian physics)
Having just graduated, all I can say is if you want to survive
JC, you have to be consistent. No last minute studying, because
that will gurantee you straight Us (espcially in the top junior
colleges). Finishing all your tutorials will help you remember
concepts. Don't expect to sleep like pig during JC. I survived on
about 5 hours of sleep everyday, juggling leadership commitments,
and academics, and ended up with an A for chemistry, and straight
Bs for my other subjects in prelims, which is like, *not boasting*,
quite good in a top JC. And that's after slogging my ass off. And
having friends call me mugger. Which I'm not if you examine my post
A lifestyle.
Jiayou if you're really looking into JC. (:
