Link building is the website promotional strategy for acquiring direct inbound links to your site. Second-tier link building is a bit more complex: it's the strategy for acquiring links to pages outside your domain that link to your pages.
By linking *TO* your guest posts from your own available resources, you can achieve two important goals:
Get appreciated by the blog owner (whose page you are thus promoting for free)
Build a more powerful (“linked-to”) page that links to you from the byline
Let’s discuss these two goals in more detail:
1. Get Appreciated = Make the Most of Your Guest Blogging Contact
I’ve always said that a blogging contact is the most important benefit you get from your guest post:
Numerous contacts with website publishers are what will one day allow you to stop building links, because links will flow on their own.
Besides, bringing up your old guest blogging contacts will let you kick-start any of your new projects or get the word out for any of your business news.