If you don't already have a POW balance, click the link below to set your account up for mining.
Now sign in with TokenPocket or your wallet of choice and enter your account name where is says user, and 8,POW (no spaces) as shown below. Now click the blue "Submit Transaction" button.
As long as you had enough ram and CPU for the transaction to go through, your account is now set up to mine POW.
Good luck and happy mining.