Introducing MantleIf you haven’t heard, Mantle is a recently announced modular layer 2 (L2) built on Ethereum, and we just launched our testnet! That means, in only a few steps, you can start using Mantle today! This guide will walk you through the entire process.Have a Web3 WalletFirst, make sure that you have a browser wallet. This tutorial will use the MetaMask browser wallet, but Mantle is also compatible with WalletConnect and Coinbase Wallet. If this is your first web3 wallet, we recomm...