Feeling overwhelmed and lost, doesn't know from where to get started

I want to do SEO for my news and basically have close to zero budget for marketing.

How can I get started using the free resources to promote my news sirte?
How long will it get to see results? (I can work on this website full time)
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This site is eight months old and has 200 high quality news articles.
Social media stats:
Instagram: 1400 followers
Linkedin: 598 followers
Facebook: 500 likes

Monthly website visitors as per Google analytics: 1200