Magoosh GMAT Prep (Premium Subscription)

You can use this link to sign up yourself and I'll get a referral bonus!
--> http://gmat.magoosh.com/invite/U7SHSD

I tried the free trial of Magoosh when I joined the GMAT Club in preparation of my upcoming GMAT exam. I found the videos extremely helpful, short and sweet, each one about 10 minutes in length. The lessons are laid out very logically and the flow is easy to follow. Quizzes are at the ends of the groups of lessons and are a great way to gauge how much information you are absorbing. I particularly like the ability to take notes in each of the lessons, practice lots of varied questions, complete flash cards (great app for your phone is available), and log onto Magoosh from anywhere and it is all saved. I'd recommend using this software to help review major topics, practice questions and get 2 more practice exams.

Also, Magoosh is great with asking for feedback and responding to it. I was having some trouble and emailed them, got a response back on a Sunday!

You can use this link to sign up yourself and I'll get a referral bonus!
--> http://gmat.magoosh.com/invite/U7SHSD

Hope this was helpful :)