diff --git a/README.md b/README.md
index a53cec6..07d21c0 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,22 @@ A very-special-use-case Firefox extension.
 
 ## Installation
 
-You can't install samoware-multisave as a regular browser extension as it is not signed by Mozilla. Load it as a temporary extension instead:
+You can't install samoware-multisave as a regular browser extension (it is not signed by Mozilla). Load it as a temporary extension instead:
 
 1. Visit the special Firefox page `about:degugging`
 2. Click "This Firefox"
 3. Click "Load Temporary Add-on …"
-4. Select the file `manifest.json` from the extension's project directory. (Actually, you can use any file from the extension.) 
+4. Pick the file `manifest.json` inside the extension's project directory. (Actually, you can use any file from the same dir.)
+
+samoware-multisave must be reloaded every time Firefox is started. 
+
+
+# Usage
+
+The extension button appears only when browsing a specific domain, and only when a single email is displayed. The extension will download all attachments into the same directory and prefix their filenames with the current date.
+
+Click the button to open a file dialog. Here you can choose the directory you want all attachments to be downloaded into. Click OK. That's it.
+
 
 ## Known bugs