How can I monetize my IRL summer job?

During the summer college break I go door-to-door in California selling a relevant service.

First summer I made 18,000, last summer 32,000, this summer I will make 40,000. <I want to double that with BHW methods.

I am at thousands of houses over the weeks, I would like to pass out a flyer that leads to a website - was going to promote Wealthy Affiliate because many are out of work or looking for side income...

But maybe passing out some kind of coupon that leads to a coupon site? I don't know much about coupons, could someone point me in right direction?

Finally, I want to make a website advertising my IRL service and try to get it ranked on Google for location + keyword? I did register a domain for this purpose. How to give it good SEO? Wordpress? I have no skills with html.

Figure I will knock on 25,000 doors if I am lazy - and most of them won't be home.