Are GMAT 2016 guides sufficient for gmat preparation? OR I need 2018?

There is no need to buy the 2018 if you already have the 2016. The GMAC just replaces a small number of questions every year.

Hi essprsodose,

The recent versions of the Official Guides (GMAT2015, GMAT2016, GMAT2017 and GMAT2018) are all fairly similar to one another - although a 'block' of questions is filtered out/replaced with each iteration. As such, having one copy of any of those books means that you likely won't need any of the other versions. That having been said, most Test Takers study with a variety of practice materials, so you will almost certainly need more than just one book to hit your score goal.

Since it sounds like you're just beginning your studies, then it would be a good idea to take a FULL-LENGTH practice CAT Test; you can download 2 for free from www.mba.com (and they come with some additional practice materials). If you want to do a little studying first, so that you can familiarize yourself with the basic content and question types, then that's okay - but you shouldn't wait too long to take that initial CAT. That score will give us a good sense of your natural strengths and weaknesses and will help provide a basis for comparison as you continue to study. A FULL CAT takes about 4 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have those scores, you should report back here and we can come up with a study plan.

I'd like to know a bit more about your timeline and goals:
1) What is your goal score?
2) When are you planning to take the GMAT?
3) When are you planning to apply to Business School?

GMAT assassins aren't born, they're made,
Rich

Here are the links to OG 2017 and OG 2018. New questions are marked:

OG 2017
Quant
https://gmatclub.com/forum/og-2017-foru ... 22199.html
Verbal
https://gmatclub.com/forum/og-2017-foru ... 22326.html
2017 quant review
https://gmatclub.com/forum/the-official ... 26197.html
2017 verbal review
https://gmatclub.com/forum/the-official ... 25020.html

OG 2018
Quant
https://gmatclub.com/forum/the-gmat-off ... 42995.html
Verbal
https://gmatclub.com/forum/the-gmat-off ... 43531.html

Quant review 2018
https://gmatclub.com/forum/gmat-officia ... 45306.html

Verbal review 2018
https://gmatclub.com/forum/gmat-officia ... 45394.html