diff --git a/Document.md b/Document.md
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--- a/Document.md
+++ b/Document.md
@@ -22,4 +22,18 @@ In some cases you might want to take a look at the demo document after you delet
 
 Trilium provides a lot of flexibility, but with that you can also potentially shoot yourself in the foot (e.g. with startup script which blanks the app view).
 
-In such cases you can manually fix notes on the database layer - you can use e.g. [https://sqlitebrowser.org/](https://sqlitebrowser.org/) to open `document.db` file, find problematic notes and manually fix them. Don't forget to commit / write changes after you're done.
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+In such cases you can manually fix notes on the database layer - you can use e.g. [https://sqlitebrowser.org/](https://sqlitebrowser.org/) to open `document.db` file, find problematic notes and manually fix them. Don't forget to commit / write changes after you're done.
+
+## How to reset document
+
+If you previously just experimented with Trilium and want to get it to the initial state, you can do that by deleting the `document.db*` files, e.g. like this:
+
+```bash
+rm document.db*
+```
+
+If you don't need to preserve e.g. the `config.ini`, then you can also delete the whole [[data directory]] like this:
+
+```bash
+rm -r ./trilium-data
+```
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