Hi there Mary,

I'm sorry but you are a tad late for that.  
GoChain is way past it's Token Sale already - which ended in a few minutes early May.

Other than that, GoChain has been listed on the following exchanges:

KuCoin: https://www.kucoin.com/#/trade.pro/GO-ETH

Bittrex: https://www.bittrex.com/Market/Index?MarketName=BTC-GO

And recently was the project who garnered the most votes during Binance's Community Coin of the Month - Round 9!

Make sure you stop by the Telegram Group and join the discussion as well