The first thing we recommend you do, is to set up your 'My Page'. You can do this by clicking on 'My Page' at the top of any page. Once you've done this you can update the page by clicking on 'Edit Settings'.
This takes you to the following page which is the 'Edit Profile' tab.
Here you can upload a photo to make your profile more personal and to make it more inviting for people to respond to your comments etc. You can also ensure that your personal information is up to date.
If you click on the 'Account Settings' tab you will see the following:
This is where you can change your email and password information.
The final tab, 'Follow and Activity Settings' is where you can control the amount of communication you receive from the site in the form of email notifications, and also where you can ensure that you see the activity of key members on the site in whom you have a particular interest.