Thought I'd share how to hyperlink on Blogger.
Once you've typed up your post, highlight the word or name you want to hyperlink. (Just the word or name...you don't need to type the entire URL in the post text.) For instance, if I want to hyperlink my shop, I would simply highlight the word shop. I do not need to type the URL at this point.
Then go up to the tool bar on the post page....you'll see what looks like two links of chain...it's next to the T (text color) button
Click on that.
A little window will pop up and you type in the URL (or copy/paste) of the place you want to hyperlink
You've done it!
Now your posting window will have a bunch of HTML gobbly gook in it, but it will simply show up as the word/name (in a different color than the rest of your text) in your published post.
After I've posted, I always go back and click on the link to make sure it works. Sometimes I have to fix it.
Hope this makes sense...good luck!
PS: I see a lot of blogs that have links to other shops in their side bars. You can link the shop name (only) and not have the entire URL show.