What are you referring to as "the main menu" or "the main page"? Both these forums are listed in the "Go To" pulldown menu and on the main Norton Community page here:
Hey, no worries--to tell you the truth, because I started participating here because of an issue on my mobile device, I had been here for a lot longer than you have before I noticed that was there (it's not, in the mobile interface I got herded into because my browser identified as Android).
Like you say--you'll get the hang of it...in fact, I'd say you're doing quite nicely for your first week!