The Online Books need no introduction but with the change of time the definition of the books is changing and that is bringing more diversity in the books as well that is making the readers have reading as pleasure. These books are those that are available for reading them online or else the form of these books is the one that is in the electronic form. These books are getting the pace as they are easy to store and they can be kept in any way that is there is no tension of these to be lost. You can carry them in your laptop, net book, pen drive and even your mobile phone. All these are the options that are offered to you and also they are great features one. The books are safe he pages will not be torn and with a software you can add notes tagged to every page. As and when you will open the page your comments better said as the notes will also come to you.