Language / Confused about Polish Nouns [8]

cześć, jak się masz?

I am studying Polish. I just began a few weeks ago.

I am really struggling with noun changes since in English nouns don't change based on situation.

I understand that there are seven different forms of noun --> right?
1-nominative (subject)
2-genitive (possession)
3-dative (indirect objects, some prepositions, etc)
4-accusative (direct object, duration, some prepositions)
5-instrumental (after byc, transportation, action using a tool, transportation)
6-locative (position of object or person)
7-vocative (addressing people)

I do not understand what endings go with each one. How do I know how to make a noun into each form?

What ending do I put on nouns for nominative, for example?

I appreciate any help or advice,

Olivia