Lots of backlinks.
Two very common ways of getting backlinks are by submitting to directory sites, and submitting your article to free article exchange sites.
You can do this manually of course, but there are programs that will help speed things up for you massively. Save yourself the time and trouble of finding all the sites, navigating them, filling out repetitive forms, these programs do 90% of the work for you and make the process a lot less painfull.
For Submitting articles to tons of article sites I use this software
Article Submitter
For Submitting to tons of free directory sites I use this software.
Directory Submitter
Both of these programs come with a free trial version that is more than adequate for creating a ton of backlinks. If you want more, you can upgrade the software and it'll unlock even more directories for a pretty nominal fee.
This is great "do it yourself" SEO stuff, I'd be happy to overcharge you to do it for you if you like, but it's no secret... you can do it yourself with these tools.