message: docs: Update IDP registration README
diff: @@ -208,52 +208,30 @@ Common usage:
  ## Using the identity provider
  -1. Launch the Community Solid Server:
  - ```bash
  - git clone git@github.com:solid/community-server.git
  - cd community-server
  - npm ci
  - npm start
  - ```
  -2. To use the identity provider, you need a compatible client application.
  -
  - You can use for example `@inrupt/solid-client-authn-js`:
  -
  - ```bash
  - git clone https://github.com/inrupt/solid-client-authn-js
  - cd solid-client-authn-js
  - npm ci
  - cd packages/node/example/demoClientApp/
  - npm ci
  - npm start
  - ```
  -
  - Go to `http://localhost:3001`.
  -3. Use the base URL of your running CSS instance to as Identity provider, for
  - example `http://localhost:3000`, to fill the form. Click the `login` button.
  -4. Follow the instructions to register/login/...
  -
  - A WebID hosted in your pod will be required to complete registration.
  -
  - In your running community server, you could create `http://localhost:3000/profile/card`
  - with the following content:
  - ```turtle
  - PREFIX : <#>
  - PREFIX solid: <http://www.w3.org/ns/solid/terms#>
  -
  - :me solid:oidcIssuer <http://localhost:3000/> .
  - ```
  -
  - When registering, follow the on screen instructions and add the OIDC issuer
  - registration token to your WebID, which you can do for example by PATCHing
  - `http://localhost:3000/profile/card` with:
  - ```turtle
  - PREFIX : <#>
  - PREFIX solid: <http://www.w3.org/ns/solid/terms#>
  - INSERT DATA {
  - :me solid:oidcIssuerRegistrationToken "IDP_TOKEN" .
  - }
  - ```
  -5. Once logged in, you are redirected to your client app, running for example on
  - `http://localhost:3001/`.
  -6. You're now authenticated and can fetch public and private resources.
  +You can register and/or create a pod by going to `/idp/register` after starting the server.
  +The input you need to provide depends on the chosen options,
  +as is indicated next to the text fields.
  +After submitting, you will get a summary of everything that was created.
  +Below are descriptions of the 3 available options.
  +
  +### 1. Create new WebID
  +Enabling this option will create a new WebID to be used for authentication.
  +Since a WebID needs to be stored and registered somewhere to be used,
  +this option also requires options 2 & 3 below to be enabled.
  +
  +In case you do not choose this option,
  +you will have to provide your own WebID.
  +The server will then ask to verify that you are the owner of that WebID
  +by adding a specific token to it.
  +
  +### 2. Register your WebID with the IDP
  +This allows you to authenticate with your WebID using this server.
  +After doing this you can use a client such as `@inrupt/solid-client-authn-js`
  +to log in with the chosen email/password combination and this server as issuer.
  +In case you are using an external WebID,
  +it is important to add the correct `solid:oidcIssuer` triple to your profile after registering.
  +
  +### 3. Create a new pod
  +Creates a new Solid pod.
  +The location of the pod will be determined by the chosen pod name.
  +In case a WebID is also being created, it will be located inside this pod.
  