While studying for my first attempt at the GMAT exam, I've noticed that each of the Manhattan Strategy Guides have an "Advanced Section" towards the end of the book. Are these sections crucial to scoring approximately a 650 on the test in your opinion? I'm currently at the Data Sufficiency section, and although I haven't looked at the Data Sufficiency Advanced portion of the book in depth yet I'm sure that it will be nearly impossible to comprehend since the normal portion of Data Sufficiency is embarrassing me.
Also, I've seen on numerous sites that the average amount of time to spend on each question is approximately 2 minutes in order to complete the test on time. What are some tips as to how to solve some of these Data Sufficiency questions in such a short amount of time? It seems almost impossible.
I'm doing pretty well with most of the Quant stuff, but I definitely hit a brick wall with DS. Please tell me that I'm not the only one who's found these questions discouraging..
Also, I've decided to take a Prep course as I'd like to enter a grad school this year. Because of my preference I need to have my final application placed before mid-July. Typically, I would've studied by myself and decided whether or not to take a prep class AFTER getting my GMAT score back, but I don't want to risk taking it in April after studying alone, getting a low score and then having to take a prep class before retaking the test. That would obviously make it impossible to retake the GMAT after a course BEFORE July. Because of this, as mentioned, I plan on joining a course for confidence/comfort.
That being said, my career won't allow me to go in person, so it's either the Online Session or the Interact Program. Any reviews of either program by previous students?
Thank you for your assistance.