The majority of the SEO task will be link building, which is the #1 ranking factor in getting to the top of Google.
I am going explain the best sources to improve your link building.
Source 1 - Article Submission
Write an article that attract your target audiences. Note that "content is king", if you have quality content with neat structure you will easily drive your audiences into your website. Add your URL at the bottom of article and author bio. Some of the article sites will not allow URLs in article and may accept URLs in author Bio.
Source 2 - Press Release Submission
Write a press release about your product services. Add your URL at the bottom of press release and author bio. Similar to articles sites, some of the PR sites will not allow URLs in article and may accept URLs in author Bio.
We will discuss other sources in my next tip.
Good luck for your SEO success!