First, you must be properly signed in - see the separate instructions about signing in if you need help.
You can access your member page by clicking the orange "MY HMF ACCOUNT" button found near the top of every page. If you instead see an orange button labeled "SIGN IN" then you need to sign in first. If neither button is displayed, then you are already on your member page. The first tab to the left is labeled "My HMF".
This is where you can change any information related to your membership by clicking the "EDIT" buttons below each section heading. To change your HMF screen name, guest sign-in id or password click the EDIT button below the "HMF Identity:" heading. Use the HELP button on the form for additional instructions.