Starting point 1: Hendler, J., Shadbolt, N., Hall, W., Berners-Lee, T., & Weitzner, D. (2008). Web science: an interdisciplinary approach to understanding the web. Communications of the ACM, 51(7), 60-69.
Starting point 2: Shneiderman, B. (2007). Web science: a provocative invitation to computer science. Communications of the ACM, 50(6), 25-27.