diff --git a/plugins/README_plugins.txt b/plugins/README_plugins.txt
new file mode 100644
index 0000000000..47a639818c
--- /dev/null
+++ b/plugins/README_plugins.txt
@@ -0,0 +1,11 @@
+This is the folder for _bundled_ plugins. If you place any other plugins here,
+they will not be seen or upgraded by any next version of Cura.
+
+If you want your (unbundled) plugins to work after an upgrade,
+please don't put them here, but install them either;
+ - via the Marketplace (recommended if available for that plugin),
+ - by dragging a `.curapackage` file onto Cura,
+ - or place it in the plugin folder in the configuration folder* for Cura.
+
+*) The plugin sub-folder of the configuration folder can be found by:
+   Open up Help -> Show Configuration Folder -> Navigate to the plugins folder.
diff --git a/resources/README_resources.txt b/resources/README_resources.txt
new file mode 100644
index 0000000000..17124bc0d5
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+++ b/resources/README_resources.txt
@@ -0,0 +1,11 @@
+This is the folder for _bundled_ resources. If you place, or tinker with,
+any resources here, they will not be seen or upgraded by next versions of Cura.
+
+If you want your (unbundled or altered) resources to work after an upgrade,
+please don't put them here, but install them either;
+ - for materials: via the Marketplace (recommended if avialable),
+ - by dragging a `.curapackage` file onto Cura,
+ - or place it in the right sub-folder in the configuration folder* for Cura.
+
+*) The configuration folder can be found by:
+   Open up Help -> Show Configuration Folder