1. Install Metamask from the official website
2. Create a Metamask account.
3. Make sure you are on the Main Ethereum Network.
4. Click "Import account".
5. Use your private key or encrypted JSON file and password from the account that participated in the FPT early presale, and click "Import".
6. Your account will be added to Metamask. Your private keys will be encrypted and stored locally on your computer. Metamask doesn't send it anywhere.