Download Metamask Wallet or your preferred wallet from the App Store or Google Play Store for free. Metamask Wallet is strongly recommended.
Get some SOL in your Metamask Wallet to swap for $REXIE. If you don't have any ETH, you can buy it directly on wallet, transfer from another wallet, or buy on another exchange and send it to your Metamask Wallet.
Go to raydium.io in your regular browser or browser inside your Phantom Wallet. Connect your wallet. Paste the $REXIE token adress into Raydium, select REXIE, and confirm. When Phantom Wallet promps you for a signature, sign.
Swap ETH for $REXIE. The token has zero taxes, so you don't need to worry about buying with high slippage. Although, you may need to use higher slippage during times of market volatility.