FireShock
Could you give me any other suggestions, how to spend last month?
On which section I need to concentrate more - Verbal or Quantitative? On which parts of these sections?
I ask owing to the fact that you may know that, for instance, concentrating on Verbal Sentence Correction could help me reach a high score due to the fact that this part has high level questions. Or rather, I should concentrate more on the geometry.
How would you plan your time?
You should take the Diagnostic Test at the beginning of the OG first. Have you done so? That will tell you whether you are Excellent, Above Average, Average, or Below Average on each of the 5 sections. I'd recommend doing the Quant all the way through, take a break, and then do the Verbal all the way through, giving yourself about 100 minutes for each. People start with very different strengths.
You should also take one of the GMATPrep exams early and review the results. You can download two of the CATs for free from mba.com, and the purchase an additional two if you'd like.
From a very general perspective, though, math concepts such as number theory, integer properties, fractions, percents, and algebraic equations show up the most. You'll also see some descriptive statistics and word problems (usually rate/work problems).
Magoosh broke this down here. If you have limited time to study then I'd focus on these topics first.
On the verbal section, you'll spend roughly 25 minutes on each question type, so you should be somewhat familiar with all of them. You should know the types of questions asked in RC and CR (RC passages usually ask you the "main idea" and CR questions ask a lot of strengthen/weaken/assumption questions) and how to eliminate low hanging fruit in SC (parallelism, logical relationships, pronoun agreement, subject-verb agreement).