As a person w/ out d&d experience, who was broadly aware of the game (ie. know classes but not the difference between actions & bonus actions), I didn’t have a terrible time onboarding. I started as a paladin and found that most of what I could do was pretty apparent and my friends who probably knew less than me seemed to catch on just as fast.

Some things like throwing potions wasn’t as obvious but I could see some choice paralysis from being a spellcaster.