The R0AR Guide to Remix IDE for Ethereum Smart Contracts
 

To begin, open the Remix IDE in your web browser. Once loaded, create a new file with a .sol extension (e.g., MyContract.sol). This file will contain your smart contract code written in Solidity.

Copy and paste this Solidity code into the SimpleStorage.sol file:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract SimpleStorage {
string private _value;
function setValue(string memory value) public {
_value = value;
}
function getValue() public view returns (string memory) {
return _value;
}
}

In the newly created .sol file, write your smart contract code using the Solidity programming language. After writing your code, click the "Solidity Compiler" button (it looks like a hammer) to compile your contract. If the compilation is successful, you'll see a green checkmark.

Now, navigate to the "Deploy & Run Transactions" tab (rocket icon). In the "Environment" dropdown, choose "Injected Provider - MetaMask." Ensure your MetaMask wallet is connected to the correct network. Select the account you'll use to pay for gas fees, then click "Deploy."