title_body: Can you suggest an advanced ereader application for textbooks? I need an ereader application that can be effectively used with textbooks; it should support features like note taking, searching, highlighting, and organizing books of any format (EPUB, PDF).
  
  What are my alternatives?
upvoted_answer: Assuming you are interested in Android apps (you don't specify your OS), I can suggest you Moon+ Reader and Aldiko Reader.
  
  Both of these apps have the features you need.