Know more about backlink

Hlw all members,
I am new in seo section.Edu link,auto approve link,mostly wp blog link and many more but i don't know how to work with this for backlink.Anyone can tell me how can i backlink using this.
Thanks in advance for help.

.edu backlinks is working well then others but only dofflow not only hyperlink noffolow links

I don't understand the question. Can you clarify what exactly you're asking for?

I too didn't fully understand your question but hope this is what you aksed for

.EDU are educational domains from where you will get a backlink to your website.

Auto approve links are links that are approved once you post something in other websites without approval.

Backlinks may be either contexual/blog comments/profile links/guest post/homepage or inner page links and so...

Before you start building links collect a list of websites to build links by considering factors such as authority/PR/traffic/******** or nofollow etc.Hope this will help you.