Getting Started

1. Go to Remix
2. Paste the code from FundMe.sol and PriceConverter.sol into new files in Remix
3. Hit Compile
4. Hit Deploy

For a more in depth blog on working with remix, read here

Fallback and receive functions

fallback() external payable {
        
    }

    receive() external payable {
        
    }

Using library

contract FundMe {
    using PriceConverter for uint256;
...

library PriceConverter {
...