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One resource that is ESSENTIAL is conquering the physics GRE , link: Amazon.com: Conquering the Physics GRE (9781108409568): Yoni Kahn, Adam Anderson: Books
Some other books that I am currently using are:
the staple intro text, Halliday and Resnick Fundamentals of Physics (10th edition is the most recent and the pdf can be easily found on google!
as well as a less know book: Physics A student companion by Lowry Kirkby.