You can get a faucet wallet for the testnet at this address: https://faucet.dune.network
You can manage your accounts through the Metal extension.
The Dune Metal extension is not installed on your browser. You can install it by visiting https://metal.dune.network
You can sign (forged) operations offline with your Dune client by issuing the following command:
dune-client sign operation <op> for <signer>
0x
