Definitely not a newbie.
bitcoind signmessage 1BqcwhKevdBKeos72b8E32Swjrp4iDVnjP 'I own the address 1BqcwhKevdBKeos72b8E32Swjrp4iDVnjP with 40k coins.'
ILkMOlgc5tSMzXfbJzqHhTOcvYGzxCCqV1GfQMjIUShL9TyWLIcxHiejhJzgUR4v+QjaXQW2DDGph/dmRc7JqWA=
Just don't want to reveal my real identity.