While browsing the Forum I discovered that a lot of users struggle to grasp the Notes Tool. Searching Youtube for a solution doesn't provide any useful insights either.
When you think linear the Tool doesn't make sense. When you think visually it doesn't make sense either. So I created this short three-step Tutorial to explain the complete ABC's of the Notebook.
Consider the following Linear Outline
(The big question: How do you duplicate this in the Notes Tool?)
- Notebook 1 Peter
- Outline
- Outline 1
- Outline 2
- Outline 3
Word Study
- Word Study 1
- Word Study 2
- Word Study 3
Summary
- Summary 1
- Summary 2
- Summary 3
A
A Notebook has Notes that can be tagged ... the tags are the Headings in your Outline ...

B
A Note's Tags becomes Indexes in the Tags Facet of the Filters ... Therefore just see the word "Tags" of the Filters as the "Index" of your Notebook ...

C
Therefore you can filter the Notebook with these "Index" entries ... useful for Personal Book Building ...

D
Just to have fun we can add another step "D" to violate the Title ("ABC's") of this post. Just add your outline as a separate note and add all outline items as "Indexes" (tags).

Now your Outline Structure will always display when you filter by "Index" in the Filters.

Z
Maybe this is the ABCDE'z of the Notes Tool ...? We should always consider expanding our knowledge beyond the ABC's of life ...