I'm doing this exam and fro Sect. 4 flash cards are the way to go. Any Section 4 questions I should hopefully be able to answer!
The most important thing is knowing your timings and understanding the structure and what it requires!
A few things to remind you of facts that are quite important:
For Teheran, Yalta and Potsdam order just remember someone had to TYPe it out in your text book
For the change of US President at Potsdam, either remember that it was Truman and this was a problem because he spoke TRUth about Communism or remember that the President was honest and TRUthful about Communism thus was Truman.
Stalin, Khrushchev, Brezhnev and Gorbachev are the only Premiers really worth knowing albeit I've not found any way of remembering it aside from Stalin was first, Gorbachev was last and then I remember Brezhnev with Prague and piece together Khrushchev's role!
Then for section 6 there's the five conferences and we were taught Gorby Really Wants My Mum which is Geneva, Reykjavik, Washington, Moscow and Malta. You can remember the 'M' conferences through the rhyme thing of 'The Cold War started in Yalta and ended in Malta'.
That rhyme also helps for when/if you're asked about tensions changing and why in the 40's and you can remember despite Teheran's existence the relationship only began to falter at Yalta and thus that is where the Cold War can be seen as starting.
My friend said to me she remember's Eisenhower was president for the Berlin Wall/crisis as EisenHOWER->Tower->Wall. I told her she was ridiculous but I found it quite funny and thus has remembered it.
But yes, try and work on;
-Dates
-Structure/question style
-Question timings
-3 key points/events for each decade covered in your sections