HI,
Your words I can relate to as I feared the abilities of myself being at my age (I'm in my 60s) as well. But I'm here to tell you that if I CAN do it with Zorin ANYBODY can! 
The interface is so easy to get use to and like you mentioned above, THE FORUM is the BIGGEST PLUS. Our Moderators are "cream of the crop" (a saying most younger won't get) in response and knowledge. In addition to the Tutorials and Guides and New Zorin OS Users Looking For Help sections that have been set in place for us to learn. It's a WIN - WIN .
Enjoy your Zorin experience and thank you for the input and know I'll be looking forward to your sharing your growing knowledge so I can see things from another viewpoint.