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Hi there! You can read about how to calculate Domain Authority here: https://moz.com/learn/seo/domain-authority In terms of improving your Domain Authority, it's best to look at both you on-page SEO to make sure you've covered the basics. Then you also want to look at your off-site SEO and building more links more links to your site. There are lots of different areas of Link Building to explore, from patching up broken links, improving your internal link profile, and good ol' fashioned content creation. Here is a great video by our founder Rand which goes over some easy link building tactics to get you started. I hope that helps to start you off! Let me know if you have any other questions :]