If you really want to upgrade your blog, this is a must! 

6 simple ways to improve your DA score!   via hellobexa.com
The Life of a Glasgow girl – explains what DA is and how you can increase it
5 way to improve your domain authority by Ruth In Revolt

Going self-hosted– the perks and choosing a host via MeganElizabethlifestyle.com

Going self-hosted: my expirence by lifeofablindgirl.com