Apologies if I'm late. This is what you should do.

1) English: Prepare from GRE books. The test includes sentence corrections, sentence completion, a comprehension (not quite sure that it is still included or not), comparison between words, as in June: December similar to Summer: Winter. Basically what I learnt from my test was that English portion is comparatively easy.

2 Maths: Try to get yourself up to speed with a NTS book, or Bankers Guide. Refresh your math skills that you have learnt throughout the course of your education. The questions include percentage, ratios and proportions (Lots of these), probability, averages, and budgeting questions (Budget questions were tricky). The math section is where it starts to tough up a little bit.

3) GK: This sections includes questions based on two things. GK relating back to events of one last year and the other is basic GK such as capital names, old name of cities, especially Pakistani cities, historical dates, import events, Royal events, IMF loan repayment dates, Circular debt, metro bus etc.

4) Essay: The last section includes 1 topic for everyone. Mine was, 'How to improve the economy of Pakistan?', while others had something related to circular debt. So you have to write, a one and half or max two pager essay on the said topic. Even if your test doesn't go well, your essay alone can also get you through - as was the case with me.

Tips, be prepared, as in be in the right frame of mind for the test, if the test gets tough on you through the course, don't worry. Just carry on, make calculated tukkas and work your way through the test and get to your essay. A mediocre test can become an excellent one if you write your essay well.

Don't be worried about the sections, like in case of NTS tests, Section marks don't count, overall marks count. I think 60 is passing - They don't reveal the numbers to you until you reach your second (Final) interview with the Heads.

Best of Luck.