Hello :)
I just started my GRE Preparation yesterday. For Quants, I have joined a private tuition. The Official Guide to the GRE Revised General Testby ETS & Manhattan GRE strategy guides are good books to begin with. ETS is cheaper than MGRE set of 8 books but it is worth every penny, you can buy only the one you need, or whole set. There is a cool website, Magoosh GRE - Online GRE Prep and Practice Questions with Video Tutorials ; it's awesome! If you are a video learner I suggest you go there because it looks pretty promising.
Magoosh also offers study plans: GRE Study Plans and Guides | Magoosh GRE Blog also, they have released book reviews for GRE 2014 GRE Book Reviews 2014 | Magoosh GRE Blog . They are really great, I have not tried their service, but I do follow Vocab Wednesday on YouTube. They also have their own guides for GRE Prep A Complete Guide to the Revised GRE, GRE Math Formula EBook & GRE Vocabulary EBook which are free! :D
Here is the review of Magoosh http://higheredublog.com/magoosh-review-is-it-really-worth-buying/
There are many other services as well. Princeton, Kaplan offer online as well. There must be some good classes in your locality as well in your locality.
Best luck!