Download & install the Tronlink Wallet either from the app store on your phone or the browser extension for desktop. Get $TRX from your favorite DEX or CEX. Remember leave enough for gas fees.
Head over to sunpump (pre-bonding curve) or sunswap (after-bonding curve) and paste the $SUNROOST contract address listed on this website to swap your $TRX to $SUNROST.
Now all you have to do is add the $SUNROOST contract address to your Tronlink Wallet for your $SUNROOST tokens to show.