This tutorial assumes you have already downloaded a web3 wallet like MetaMask, and that you have Ether or a token in that wallet on the Ethereum mainnet. If you don’t have a wallet, visit our portal here to download one. Disclaimer: ETH is the gas for Arbitrum. YOU NEED ETH TO MAKE TRANSACTIONS ON ARBITRUM. 01 Add the Arbitrum One network Add the Arbitrum Network automatically by clicking the “Add L2 Network” button on the top right. Add the Arbitrum Network manually by following the steps be...