Starting my first job tomorrow, what are some things that can help me prepare for it

Tomorrow is gonna be my first job, I'm 23 (m)/[24 in a few months] earning rm1800 for 3 months probation first then my employer will boost my income based on how I perform during the 3 months but he also told me this place mainly to learn gain experience and not to earn much money.

So I'm actually a finance graduate, but I'm doing accounting so I have no idea how I'm going to do this job but I do wanna excel at this. I will be using the ubs accounting software so I wanna master that but not sure how to start. So I hope some accountants can give me some tips.

I would also like some advice on how to prepare for my first day at the job and as well as know how do you guys manage time for gym, socializing, private alone time with a 9-6 job?