In Notes Home you make a list of categories and under the categories you can have an internal link to a full fledged Note. For example,
Notes Home could have a category called "Hydrology"
Hydrology
1. Horton Infiltration
2. CN Infiltration
and under the category "Hydrology" you would have a link to other notes - in this case a link to two notes about Horton infiltration and CN infiltration. You can create the link to the sub notes by using the command "Create Link to Note". The user of the Notes Home would simply click on Horton Infiltration if they wanted to see that note rather than having to hunt for it amongst all of the other notes.