Sites that people like and want to use get links naturally (because people know it, like it, use it). You just need to get the first couple links to “get on the radar” as bi-nz pointed out. Advertising is probably the best way to launch a new site and getting people to use it (since you’re starting with 0 visitors/day).

A websites back link profile is directly correlated to “is it useful”. That’s what Google means when they say to focus on the user and you hear people saying “content is king”. Useful sites get linked to, because the site provides some sort of value to a certain audience. Crappy sites do not have healthy backlink profiles because you’re fighting an uphill battle, trying to build links to something that people don’t care about, like, or use. So you have to resort to manufacturing them.

The best analogy I’ve heard regarding making money is this: How do you catch a mouse? Do you chase it and try to capture it? No. You put out some cheese and let the mouse come to you. Your website is the cheese. Good cheese attracts links and visitors