Create a new BSC wallet if you don't have an existing wallet.
Buy $BNB which you will use to swap later, you can buy $BNB on Binance or any other exchange of your liking:
Open your BSC Wallet.
ADD EDITED OVERVIEW OF BSC WALLET
Make sure to switch to the Binance Smart Chain network through the top bar of your BSC wallet:
It's time to copy your Smartchain receiving address in your BSC Wallet by clicking "Receive".
Either connect your Binance account if you have one, or get the address through "Address or QR Code".
Time to transfer the $BNB that you bought on Binance.
If you do it manually, locate the $BNB in your wallet on Binance, click on the $BNB and choose "Withdraw".
Paste the address you copied from your BSC Wallet in the "Address"-field.
Choose the network "BEP-20" in "Network."
Enter the amount of $BNB you want to transfer to your BSC Wallet.
Then click on "Withdraw" and confirm the transfer.
Wait for the transaction to be processed, normally this is done within a couple of minutes up to 10-15 minutes. Sometimes it takes longer, Binance have had some uptime issues recently (crypto is hot right now). As long as you followed the steps outlined above, you are fine. Once transfer is completed, you should have an updated $BNB balance in your BSC Wallet.
OK, the time as come to swap your $BNB for $RCUBE via PancakeSwap using BSC Wallet - the final step of buying RCUBE coins
Go on PancakeSwap, official address for RCUBE swap in this link (you can confirm this with Retro DeFi official website or Telegram channel).
Connect your BSC Wallet by clicking "Connect" in the top-right corner of PancakeSwap. Choose "Binance Chain Wallet"