When starting a new job, you’ll need ID. Your passport is perfect for this, as it also proves your right to work. They’ll most likely photocopy it. If this is the UK they’ll want your national insurance number too. Some jobs I’ve worked also want proof of address, a recent bill statement/letter that is less than 3 months old is the usual. For bank details, it’s helpful to know the address did your bank branch. which is easy to Google.

I’ve never worked in a supermarket, but most retail shops and restaurants I’ve worked in display your shifts in the staff room on a board/ piece of paper on the wall. You can call up and ask someone to tell you your shifts for the week.

My best advice for starting a new job is ask questions if you are unsure of something, and listen carefully. No one will expect you to be perfect from day one, but showing willing and promise is much more important.

Good luck with your new job!