Plumbing apprenticeship

Hey so I just got accepted at a local plumbing company as a helper/apprentice they do both residential and commercial jobs so I just want to know what would be the best tools to have for my first day and I should study up on so I don’t go in looking like a complete dumbass. I’m willing to put in the work and soak up as much as I can I really want this to be my career for the long haul. Thanks in advance for the tips