The idea with the sales funnel is to guide your visitors through your site. It eventually land on a related sales page, where you can try to persuade them to buy your product or service. The question need to ask is “what does my visitors really want?.
How do you get them to do this? This is the main question you need to answer and the main way to answer this question is to think about what the visitor wants.
If they have done a search on Google about a subject related to your product. Take them to the page with little sales copy explaining why they should hire you, a buy button and a phone no. so they can get in touch.
Sometimes a nice article on some basic things a free video, showing in exchange of their mail id (building a prospect list), enabling you to follow up with them via email, increasing your chances of getting a client and making a sale.