This coin launched? Can I mine it?
or what is the date of launch?
NAV / BTC You can mine by buying coins from an exchange like bittrex
https://bittrex.com/Market/Index?MarketName=BTC-NAV.
Download the NAV wallet from page 1
Then send your coins from the exchange to your wallet. Don't password protect the wallet.
Your coins will start mining in the wallet with no GPU required or anything else. The more coins in your wallet the more coins you will mine.
GPU mining has finished @52.6 million coins where created in 7 days.
Now the above is the only way you can mine. Hope this makes since.
Great time to purchase NAV / BTC and Annon Beta testing is starting next week.
Also your NAV wallet MUST always remain open or minimized on the Desktop to Mine. I have my wallet setup to auto-start if I have to reboot the PC - So it always OPEN!