diff --git a/roles/calibre-web/tasks/install.yml b/roles/calibre-web/tasks/install.yml
index 73f945746..8616674e6 100644
--- a/roles/calibre-web/tasks/install.yml
+++ b/roles/calibre-web/tasks/install.yml
@@ -48,6 +48,14 @@
     virtualenv: "{{ calibreweb_venv_path }}"    # /usr/local/calibre-web-py3
     virtualenv_site_packages: no
     virtualenv_command: python3 -m venv {{ calibreweb_venv_path }}
+# VIRTUALENV EXAMPLE COMMANDS:
+# cd /usr/local/calibre-web-py3
+# source bin/activate
+# python3 -m pip list
+# python3 -m pip freeze > /tmp/requirements.txt
+# python3 -m pip install -r requirements.txt
+# deactivate
+# https://pip.pypa.io/en/latest/user_guide/#requirements-files
 
 - name: Install /etc/systemd/system/calibre-web.service from template
   template: