How to Outsmart Your Boss on marketing 2018

https://www.scribd.com/document/413925182/20-Reasons-You-Need-to-Stop-Stressing-About-clickfunnels-pricing-chart

The purchase funnel, or purchasing funnel, is actually a client concentrated advertising design which illustrates the theoretical client journey to the acquisition of a service or product. In 1898, E. St. Elmo