I tell my clients to nevr paid for ads by the likes of Google and Bing! Or paid linking!
I use both internal and external linking for the clients websites. Take http://coloradosnowremoval.us/ for an example. There are more than 50 satellite websites that link to both this website and this website’s YouTube Channel, as well as the other 15 speciality websites of Lightning Mobile linking to this website, as well as the main Lightning Mobile website, as well as the “glommers” linking to it. This is just one of the 50 some satellite websites: http://adamscountysnowremoval.com/
I also have the largest cannabis website (by webpages at over 375 pages) in Colorado and its internal linking has over 7000 links!