> For the complete documentation index, see [llms.txt](https://docs.common.fi/knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.common.fi/knowledge-base/legacy-info/wallet-extension/settings.md).

# Settings

If you click the little gear icon in the top-right corner of the extension, you will see a settings page:

<figure><img src="/files/yiKaah68sqsGAHbSPi43" alt="The settings page, allowing you to choose a network, visit the help center, submit feedback, view changelog, read the &#x27;About&#x27; section and lock the extension." width="372"><figcaption><p>The settings page.</p></figcaption></figure>

While the 'Help center', 'Feedback', 'Changelog' and 'About' sections are mostly self-explanatory, we will take a look at the 'Active network' section.

### Choosing a network

In most real-life scenarios you will want to stick to the default (Aleph Zero EVM Mainnet). However, if you're just starting out, you may want to experiment on Testnet. In order to do that, let's click the 'Active network' button in the settings. You will see the following screen:

<figure><img src="/files/xqM933QdWdzktj5e39G0" alt="A screen allowing you to choose networks, with a &#x27;Test mode&#x27; switch that enables the Testnet." width="373"><figcaption><p>After enabling 'Test mode' you can use the Testnet!</p></figcaption></figure>

If you enable 'Test mode', you'll be able to switch the network to the Aleph Zero EVM testnet, which allows you to freely experiment without actually paying any fees in actual AZERO. Instead, you can use TZERO, which is a testnet currency that you can get from the [Faucet](https://drpc.org/faucet/alephzero).