You can look at the blue button in the upper right, at the end of the menu. If it says “LOG IN”, then you are not yet logged in, and you need to click it to log in.If it says “LOG OUT”, then you are logged in, and you may click it to log out.
Also, you can move your cursor over the “Members” menu, and look at the first item. If you are already logged in, the first item will say “Logged in – Click to log out”.
If you are not logged in, the first item will say “Click to log in” and it will take you to the login page.
There is a blue RESET PASSWORD on the login page, in case you cannot remember your password. It will send you an email, with instructions to reset your password.
(These images are not “live” – they are just a screenshot to show you what to look for. Clicking on it won’t do anything.)