Answer

Buying behavior is the decision processes consumers follow when embarking on and entering into buying decisions.  Since the growth and spread of internet shopping in the late 1990s, identifications of key factors influencing consumers’ behaviors and attitudes toward online shopping has emerged.
 

Go to the Virtual Business Library's Marketing Information section for links to useful resources including a link to the following suggested resource. 
 

eMarketer: Provides data and analysis on digital trends.  Go to Topics under Retail and Commerce amongst others.

Go to the Virtual Business Library's Economic and Statistical Information section for links to useful resources including a link to the following suggested resource.  
 

Statista: Provides statistical data and reports, including Digital Advertising and buying behavior.

Go to the Virtual Business Library's Case Studies  section for useful resources including a link to the following suggested resource:

Sage Business Cases:  Provides a digital collection of business cases.  Search in the Advanced Search tab or go to the Browse by Subject.

You may also want to review material found in the Pew Research Center website.