Seeking Help With GMAT Preparation

[Marie]

Hey everyone. I’m getting ready to study for the GMAT, and I want a solid plan. Can you share what helped you most? I mean the best books or sites, which practice tests to use, and any methods that actually improved your score. I also saw ads for services that claim they can take my gmat exam for me I’m not looking for that. I want to learn the right way to prepare and get better.