some online materials and books: http://www.quora.com/What-are-the-most-learner-friendly-resources-for-learning-about-algorithms http://www.quora.com/What-are-t

some online materials and books: http://www.quora.com/What-are-the-most-learner-friendly-resources-for-learning-about-algorithms http://www.quora.com/What-are-the-most-learner-friendly-reso... some interview questions: http://www.quora.com/What-questions-are-Java-Software-Engineers-seeing-the-most-of-on-technical-interviews?q=java+inter http://www.quora.com/What-questions-are-Java-Software-Engine...