Nanoscience and nanotechnology examine
the design, application, and utilization of devices, techniques, and
technologies critical to research at atomic, molecular, and macromolecular
levels ranging from 1-100 nanometers. Source: AccessScience
Encyclopedias are a good place to start to learn more about an unfamiliar topic. For example, reading a ten-page introduction in an encyclopedia is better than tackling a 300-page book.
National Science Foundation introduction to nanoscience.