The nov 29 snapshot captured the value of your ada balance in Daedalus or Yoroi and this value is now available to you for staking on the Incentivized Staking Testnet. Look HERE for special wallet versions that lets you claim your Incentivized Testnet ADA tokens. From within your wallet of choice you can delegate your stake to one of the stake pools listed.
How to choose a pool?
Which pool to choose depends on multiple factors. Follow our Pool Blog to learn about what makes a pool profitable.
Testnet staking for REAL ADA
Mind you, the Testnet tokens can only be used for staking and cannot be transferred out of the testnet or to an exchange. However, all staking rewards you collect will become available to you as real, spendable ADA! So the ada earned on the testnet represents real money! Cardano’s Incentivized Staking homepage