30 days is not a great amount of time in which to work through every topic in each one of our 8 strategy guides! That would require you to master the contents of a book every 3-4 days! You can read them that fast, but that doesn't leave you much time for practice.
Having said that, here's what I recommend:
*Start the Sentence Correction guide right away. This book covers a lot of topics, and you don't want to cram it all in at once. Continue to work steadily through the book throughout the next month, stopping to practice in
the Official Guide as directed. (In your
MGMAT Student Center, you can access an
OG Problem Sets doc with particular sets of
OG problems to do at the midpoint and the end of the book. You can also find lists of all the
OG questions for each topic.)
*The RC book is easier to read in a short burst, so work that in whenever you can, preferably at least a few weeks before the exam.
*The CR book also needs to be stretched out, but not as much as SC. Start soon and work through it a few chapters at a time.
*For the quant books, start wherever the need is greatest and then move along. It's better to cover topics well (and even come back and repeat) than to go over everything superficially, so you may need to let some things go to make progress where it's most important. You can run an assessment report of your
MGMAT exams and look for which areas are the lowest. Pay the most attention to the more common areas, such as Fractions/%s, Exponents, and Stats. Don't worry as much about, say, Probability or Functions. If you're not sure, I'd suggest Fractions/Decimals/%s and Algebra first, Word Problems next, then Number Properties and Geometry. Don't do the Extra chapter unless you have already worked through all the books.
*Again, for Quant, use the
OG Problem Sets doc to find drills for each book & topic.
I hope this helps. If there's anything more I can do to help you fine-tune to your needs, let me know.