How do people purchase online ?

Online users go through a decision-making process that guides them in their purchases. This process takes into account both internal and external influences of the consumer.

So if you are selling shoes online there are two simple steps they take to make a decision: 
1. They ask their friends by sending them a link
2. They just buy them based on impulse

However, it is important to note that online people cant touch the product so its harder to get influenced when you are not trying them on.