Backlink 

2 type of backlink

1*unfollow Backlink

2* Do Follow Backlink

Why backlink important 

Ans. Good SEO of any website backlink are important role
Its not Google say official its only a study seo largest company moz 
Many way to you create good Do follow backlink 
Click here and check examples
1 https://www.theverge.com/users/Amit%20Gautam
2 https://diva.sfsu.edu/users/Taylor.Judd/courses/podcasts/blog/10-12-2010/title-of-podcast
3. https://www.diigo.com/user/amitjiberthin
4. http://yalsabadges.ala.org/node/1412?page=195#comment-53561