Hi everybody, I'm an engineering student with an avid interest in Maths. I wish to do some kind of research in Maths someday and Really enjoy studying it. Of late, I have been reading a lot of Maths books on different topics and it's getting hard to keep track of everything I've read. I have been thinking of keeping noted of them for easy reference and revision, as well as keeping track of everything I've read. I very much prefer electronic notebooks to physical ones. They are easier to maintain, easier to edit, don't get lost or torn over time, don't occupy the physical space of a cupboard and allow easy revision throughout life. I have an iPad and so would like to take advantage of the technology. I'm looking for a app which would : 1. Allow me to keep separate folders and sub folders. So, I can maintain separate notebooks for separate books and separate chapters within them. 2. Allow integration with pictures so I can write mathematical notation in my MathPad app and then export it as a picture to the notebook, 3. Allow back ups to the cloud so I don't lose my data when I move on to the next iPad. A visually-pleasing user interface is always appreciated. Any kind of integration with mind maps would also be great. I have an excellent flash cards app already. If there's any way to link the two, it would be great too ! Please tell me if you have any good suggestions ! Thanks a lot for your time and effort ! May you be blessed !