Advice, support and guidance for a newbie?

Welcome to trainer road. It would probably be easier for you to start out with a low volume plan since you mentioned stress in your life. It is much easier for me to train on the bike three days a week and add in an endurance ride. Starting out on five days a week didn’t work for me. Also, distraction with music is very helpful. I like rock music because the beat is at about 90. This is about my average pedal cadence.