I want to embed a PDF of a pattern, but Blogger doesn't allow you to embed anything but images and videos. So I started by following the instructions provided at Blogger Tips and Tricks. Scribd's interface seems to have changed since those instructions were written, so below in bold are updated steps.
I created an account at Scribd and uploaded my PDF. Then I clicked on the link to go to the page where my PDF is displayed.
Now I want to add code to embed that PDF in my page here. I click the Share button above your PDF (fourth from left). That makes a popup come up which shows various options.
About halfway down there is a section called "Embed this document". Leaving all the options at their defaults, I just clicked the Copy button, and then pasted into my Blogger edit window.
Free Knitting Pattern - Gauntlets
The result is a Scribd flash viewer of my PDF with links to download/print/etc.