To use Hedge, users must have a Solana wallet installed. There are many available; some of the popular options are Phantom and Slope.
Once your wallet has been installed, you should either restore a previous key or set up a new wallet. For extra security, we recommend using a hardware wallet such as Ledger (though Solana support is limited right now).
When your wallet is set up, you can send yourself SOL from a centralized exchange such as Coinbase or FTX. A guide like this one can help you transfer funds. You can also buy SOL from within Phantom using Moonpay.