Also, please note that a new draft of your site will be created in the new Google Sites. This new draft site will have the same content, but a different look. Your original site will not be affected.
Click on What to expect when you convert a site to learn about:
- Site customization
- Images, embeds, and gadgets
- Site structure and page types
- Comments, subscriptions & revision history
- Sharing & publishing
Embedded below is a 1 minute and 11second YouTube tutorial I created.