At the bottom of your website, in the footer, there should be a link to Login.
Note: you can also get to your login page by going to yourwebsite.com/login.
If you're not already logged in to your Oznorts account, clicking that will send you to a login page on Oznorts.com where you enter your Oznorts login details. If you are already logged in to your Oznorts account, you will be redirected back to your website where you will be succesfully logged in.
If it's your first time logging in to Portfolio Place, after you click the Login button on the login page, you will be asked to authorize your account for Portfolio Place. Once you authorize your account, you will be sent back to your website where you'll be logged in.