I once had a commercial boat builder tell me that he always got to the shop before work started and sweep the shop floor, said it helped him organize his thoughts. Not just the act of sweeping but sweeping up and around the things that were on the shop floor.
So that’s my advice; even if you know nothing about the boat grab a broom and start sweeping. You’ll soon find something that needs greasing, fixing, organizing, cleaning or replacement etc.
Also you’ll learn the boat which will in turn increase your confidence.