How to Explain marketing funnel book to Your Grandparents

https://app.box.com/s/b6daze4w80uc8p9oibguv74actxxwwub

A funnel is usually a tube or pipe that may be large at the very best and slender at The underside, employed for guiding liquid or powder into a little opening. Funnels are often made of stainless-steel, aluminium,