# Settings If you click the little gear icon in the top-right corner of the extension, you will see a settings page:
The settings page, allowing you to choose a network, visit the help center, submit feedback, view changelog, read the 'About' section and lock the extension.

The settings page.

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:
A screen allowing you to choose networks, with a 'Test mode' switch that enables the Testnet.

After enabling 'Test mode' you can use the Testnet!

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). --- # 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.common.fi/knowledge-base/legacy-info/wallet-extension/settings.md?ask= ``` 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.