If you have been using Obsidian you will be used to seeing Properties, or YAML frontmatter, if you want to use that naming convention. The rough equivalent to this in Tinderbox is “Attributes”, and you can have as many of these as you want. You can invent your own, and you can make them Displayed Attributes for any note, or see them in the Attributes Browser. Have a look for “Attributes” in the documentation, or in aTbref and that should help. Or search here on the forum.
Edit: an Attribute called “Tags” already exists in Tinderbox, but you might find you want to create your own Attribute for the task you have in hand – just as you might create a new Property in Obsidian. And do look at the instructional videos that are available here: