# Getting Started

Please note that some native ETH tokens are required to pay for gas on [Optimism Network](https://www.optimism.io/). Make sure to always keep some ETH in your wallet.

* Official Bridge - Bridge ETH from Ethereum Mainnet to Optimism:

{% embed url="<https://app.optimism.io/bridge/>" %}

**Wallet Setup**

Extra Finance is a native DeFi protocol on [Optimism](https://www.optimism.io/), a lot of Web3 wallets can be configured for use within the Optimism ecosystem. We currently support the most widely used wallets, including:

* [MetaMask](https://metamask.io/) (and its fully compatible wallets including [Trust Wallet,](https://trustwallet.com/) [ImToken](https://token.im/), etc.)
* [Coinbase Wallet](https://www.coinbase.com/wallet)&#x20;
* [WalletConnect](https://walletconnect.com/)

Extra Finance also support Multi-Sig Wallets like [Safe APP](https://app.safe.global/welcome).

Please find guides below for the wallet options mentioned above:

[MetaMask](/extra_finance/getting-started/metamask.md)


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