Gaaaahhh! So confusing!

Woof! This whole insert links thing is so confusing! I'm not really sure about what URL stands for, and i'm not sure of the correct way to type the blog site into this code thing. In need of assistance, here! When you first go over the stuff before you create your blog, blogger says that they are contantly working to make this stuff more simple and comprehensible. This inserting of links thing isn't so simple and comprehensible to me!!