diff --git a/Authentication-methods.md b/Authentication-methods.md
index 1d17c74..90a33aa 100644
--- a/Authentication-methods.md
+++ b/Authentication-methods.md
@@ -1 +1,56 @@
-Ciao!
\ No newline at end of file
+yt-dlp support two main Authentication schemes:
+- Username/password based authentication
+- OpenID authentification
+
+## Username/password based authentication
+
+To enable this authentication scheme edit your `config.yml` and add the following lines:
+
+```yaml
+require_auth: true
+username: your_username
+password: your_password
+```
+
+Provide your `config.yml` to yt-dlp-webui:
+```sh
+./yt-dlp-webui -conf config.yml
+
+# or with docker
+docker exec --rm -d -p 3033:3033 -v <your_config_directory>:/conf ghcr.io/marcopeocchi/yt-dlp-web-ui:latest
+```
+
+## OpenID authentification
+
+To enable this authentication scheme you need an **OpenID authentication provider** (e.g. Google Oauth2), `client_id` and a `client_secret`.  
+The requirements can be obtained from your authentication provider, for example, Google make them available here https://console.cloud.google.com/apis/credentials.
+
+The **callback URL** is `https://localhost:3033/auth/openid/signin` where `https://localhost:3033` is where yt-dlp-web-ui is exposed, a real-like application would be something served by a reverse-proxy (e.g. `https://yt-dlp-webui.yourdomain.tld/auth/openid/signin`)
+
+Edit your `config.yml` with the following keys:
+
+```yaml
+# OpenID Google Oauth2 example
+
+# disable password based authentication
+require_auth: false
+
+# enable openid authentification
+use_openid: true
+openid_provider_url: https://accounts.google.com
+openid_client_id: your-client-id
+openid_client_secret: your-client-secret
+
+# localhost:3033 is where yt-dlp-webui is exposed
+openid_redirect_url: your-callback-url
+# a production like example
+# openid_redirect_url: https://yt-dlp-webui.yourdomain.tld/auth/openid/signin
+```
+
+Provide your `config.yml` to yt-dlp-webui:
+```sh
+./yt-dlp-webui -conf config.yml
+
+# or with docker
+docker exec --rm -d -p 3033:3033 -v <your_config_directory>:/conf ghcr.io/marcopeocchi/yt-dlp-web-ui:latest
+```
\ No newline at end of file