Updates to the content

[HeyGarrison]

👋 Great work here - really like how the content is precise.

There are some things I think would be worth improving:

• Not all of the code runs as expected (it seems like there are some problems with the SDK being included in the package.json, but not exactly sure.
• In some of the content sections (specifically "Implementing 'Open in StackBlitz'") it seems like you could include more raw code and that might aid the user in figuring out what to do. I think code kind of helps to break up the wall of text feeling.
• It would also be good to add in an explicit section for the ephemeral embeds. I know you reference them during the tutorial, but a dedicated page would be quite helpful as it really is a critical feature.