Referred books/learning resources:

1. Nanotechnology: An Introduction.
    - By Prof. Jeremy Ramsden.
2. Nanotechnology: An Introduction to Nanostructuring Techniques.
    - By Prof. Wolfgang Fritzsche and J. M. Köhler.
3. Introduction to Nanoscience and Nanotechnology.
    - By Prof. Chris Binns.
4. Fundamentals of Nanotechnology.
    - By Prof. Gabor L. Hornyak, John J. Moore, Harry F. Tibbals 
      and Joydeep Dutta.
5. Nanoparticles: from Theory to Application.
    - Edited by Prof. Gunter Schmid.
6. Web sources like Wikipedia, open net sources.