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# MetaMask
* https://metamask.io/
## 1. Install
* Chorme extension: https://chrome.google.com/webstore/detail/metamask/nkbihfbeogaeaoehlefnkodbefgpgknn
* It also supports Firefox, Brave, Edge, Opera, iOS and Android.
## 2. Create a wallet or import one using secret recovery phrase.
* Password (8 char min.)
## 3. Know how to secure your wallet
* **Secret recovery phrase**(12-word phrase) is your master key.
* Keep it safe.
* Don't share with anyone.
* If you lost your master key, no one can help you, even MetaMask team.
## 4. Secret Recovery Phrase
* Write down the phrase or memorize it.
## 5. Confirm your Secret Recovery Phrase
* 根據剛剛寫下來的單字，按順序填入。

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# MetaMask 功能介紹
## Interface
* Account1：帳號名稱
* 0x......：地址
* ETH ：ETH餘額
* Buy：購買ETH（from coinbase, ....）
* Send：傳送ETH (to another account, smart contract...)
* Swap: 兌換其他幣種
* fee: 0.875%
* compares various aggregators, DEXs and market makers.
* About swap
* https://metamask.io/swaps/
* https://medium.com/metamask/introducing-metamask-swaps-84318c643785
## My accounts
* Create account
* Import account (with private key)
* Connect hardware wallet
## Set Test Network
* Settings > Advanced > Show test networks: **turn it on**
* Choose **Goerli** testnet
* [Ethereum Foundation: about testnet](https://ethereum.org/sl/developers/docs/networks/#ethereum-testnets)
* Goerli faucet
* [Alchemy](https://goerlifaucet.com/) (要先註冊) ：0.1 Goerli ETH/day
* [Chainlink](https://faucets.chain.link/)（要有twitter)：0.1 Goerli ETH and 20 test Link
* [Goerli PoW Faucet](https://goerli-faucet.pk910.de/)(不用註冊，但比較慢，至少要)

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