Prepare the amount of USDC you would like to lend (and some ETH for gas) in your wallet. Currently, Clearpool supports MetaMask and Wallet Connect:
Connect to the app
Find the pool of the borrower you want to lend to and click Provide Liquidity
Enter and approve the USDC amount (enter maximum amount possible to avoid additional future approvals)
Enter the amount of USDC you would like to lend and click Provide Liquidity
Approve the transaction in your wallet
Once the transaction is confirmed, you will receive cpTokens specific to this pool. The cpTokens appear as cpXXX-USDC in your wallet and will accrue the pool interest rate on every block (see cpTokens for more information).