GRE

I highly recommend buying the ETS GRE Testing material. ETS is the company that makes the exam, so the questions are the most similar. Magoosh is also very helpful. They have a lot of products, test plans, etc (for a fee). I found that Magoosh's flash card word apps for my phone were very helpful to learn the vocabulary. Lastly, I used Barron's online GRE material, which set me back about $200, but was much cheaper than many others. I studied consistently for about 2 months, with some off-and-on before then. Take a few practice tests and find your weaknesses. I thought math would be awful for me, but after a bit of practice, I realized math was fine and it was the reading comprehension I needed to work on. Good luck! The GREs were tough for me, but I ended up exceeding the required scores for my schools, so I was happy.