Reddit reviews Foundations of GMAT Math, 5th Edition (Manhattan GMAT Preparation Guide: Foundations of Math)

Hello! If your quant feels too rusty at the moment, start with Mgmat’s fundamental math guide. A link for reference:
https://www.amazon.com/Foundations-GMAT-Manhattan-Preparation-Guide/dp/1935707590/ref=nodl_

I am doing Gmat on a tight budget so found all the Mgmat books in my local library (yay public libraries!).
Heard great things about TTP here on reddit.

Keep your practice tests for a bit later. Not everyone fares well with an initial diagnostic test and in some cases it shakes your confidence badly.
So study for 2 weeks and then give one to assess your strengths and weaknesses. For a lot of people usually 1 test a week is enough to keep them motivated and prevents mental fatigue. But to each his own. Most importantly, make sure you experiment with the section orders so that you can figure out which section order works best for you.

Edit: For verbal Manhattan has a basic verbal book too.

Thank you very much Brent!

Do you think a Manhattan book like Foundations of GMAT Math or the [GMAT Quantitative Strategy Guides] (https://www.amazon.com/Quantitative-Strategy-Guide-Manhattan-Guides/dp/1941234119/ref=sr_1_6?s=books&ie=UTF8&qid=1499028151&sr=1-6&keywords=Manhattan+gmat+strategy+guide) would work well? And if so, which do you think is better? I need to score in the 720+ range, so I want to make sure the guide includes explanations for the higher difficulty problems/logic. I'm leaning towards the Strategy Guides ones, but want to make sure I choose the right books.

Thanks again for your help!