If you a newbie and don't know where to buy Tron, you can buy through Binance
I suggest going to Coinbase
first buying Bitcoin or ETH.
Click on the Coinbase photo to be redirected.
Once you have your Bitcoin or Eth then proceed to sign up to Binance
please click on the pic below and buy TRXBTC or TRXETH.
Sell your house, sell your car and buy as many TRX as you can before mainnet gets launched throw them in a draw and go long term, you will be extremely happy you did.