When you hover your mouse or click over your name in the upper right corner of your browser, this expands to link you to your Profile Screen as well as a Log Out link and your member toolbox.
Your toolbox will allow to choose how you wish to interact with other members of the network, as well as how others see you.
To start with, go to the Settings > General area and be sure that the email address associated with your account is accurate. This way, we’ll be able to contact you, and you’ll be able to receive notifications about things posted to the network that interest you. You should also change the default password that was assigned to you to one that is more familiar.