[SOLVED] How to create links in posts and pages

While I am writing a post and I want to give a link to an outside website, how do I do it?

In the bottom of each blog, this site has something called

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and has other posts linked to it. How can I do the same?

http://wanderingchopsticks.blogspot.com/

Also, I have a food blog and I created a page called Recipes. How do I give out links to my posts in the Recipes page? i.e. My Recipes page would have links to Shrimp Cocktail, Pizza etc.

My blog is www.delicateflavors.com

Thank you,