# Registering your first player

If this is the first time you use Castmill, you could start by registering a so called "[Chrome](/players/chrome-browser.md)" player. This player will help you to get acquainted with the system and to test everything before you register your real production players.

For this to work you need to open the Chrome browser in your PC. If you do not have Chrome please install it from <https://www.google.com/chrome/>

{% hint style="info" %}
Castmill is optimized for the Chrome browser, so it is recommended that you use this browser also for accessing the castmill app.
{% endhint %}

From your chrome browser open a new window and go to the URL <https://player.castmill.io>.&#x20;

The player will load and you will get a **pincode**:

![The castmill player waiting for registration.](/files/-M_LFkTvbHdo8Ak47ppg)

Now you can go back to your "Players" tab in the Castmill app and register this player:

![](/files/-M_LGDbz0TNZxnHAg69U)

If you click on "Register" now the player will be registered and appear in your list of players!.

![](/files/-M_LGVB-Axgrj1_Asbyr)

![](/files/-M_LGfIsC8I-278BJIs8)

The player appears "online" and there is a bunch of other details information about it, but do not worry about this we will explain these controls later on.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.castmill.com/getting-started/navigating-around.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
