TEA tokens are the primary utility token for the TEA Project. TEA is used as gas on the TEA network and is necessary for signing transactions. TEA is also the currency that's exchanged by consumers in order to use TApps.
The TEA Fluencer TApp can be used as a retweet faucet (through Twitter) to secure some testnet TEA to compete in the contest. Testnet TEA can be exchanged for COFFEE which are vouchers for mainnet TEA.
After mainnet has launched, users will be able to use decentralized exchanges on Ethereum to purchase TEA tokens. Liquidity on centralized exchanges have not yet been formalized.