Newborn oil

Hello Mama’s, I am 34 week today with my first baby . I wanted to know what oil do you guys uses to massage your newborn and when do I have to start putting oil on them? I have so many questions about new born , going to have a first baby in end of the may. I am full of emotions 😭😭😭!! Nervous , excited everything at the same time .what do I have to do with the newborns . How many times do I have to bathe them in a week ?How many times do I have to change them in a day. How do I know if they are hungry or full ?? So so many things in my mind 😍😍. Help me out . Thank you 🙏