First, make sure you have your Polygon Wallet ready.
To connect to Polygon Mainnet, you can visit PolygonScan, scroll to the bottom of the page and click on the “Add Polygon Network” button with a Metamask icon in it.
Then, you can get some MATIC (Polygon Token) from any exchange platform.
Go to https://mint.thebeu.io and start minting a BeU NFT!