Hello, 

(a) Identify your natural strength area - that can be quant or verbal or NONE (still fine). Anyways, DI / LR is more about practice, practice upon quality content, regularly.

(b) Out of 34 questions in QA, look at High Value Chapters, and start with these.

If you can manage to get around half of 34 right, you will be at 93–94 percentile (as per CAT 2015).

(c) Get a good book for LRDI, and solve 4–5 sets (i.e. 20 questions everyday).

(d) Start reading a good newspaper / non- fiction novels. This will help you in RC. In any case, Para Jumble and CR are quite logical in nature, and you can learn the tactics to solve those questions easily.

(e) Join a coaching institute. If classroom coaching is not possible, join online courses and test series of any national Test Prep co

mpany. This will help you in getting into a structured thought process.

Good part is - total types of questions asked at CAT is finite. A question is difficult only if you are seeing you are seeing it for the first time. If you find a question is difficult even if you are seeing it second time, ask yourself - Are you honest enough with your preparation?

Last but not the least - if you find yourself average in an area it means (in most of the cases) that you have NOT done similar questions in your life. It is your time - to go through the concepts andsolve the questions

Hope this helps....