Moving on my own😱😰

So my bf  got a job in another state and I plan on going with him once this semester is over and transferring to a school there. There is SO much I have to do and beginning to become overwhelmed. My question is where do you buy cheap stuff??? Like silverware, plates, bowls, ect. Bathroom stuff. And any other important things.  Another question is do I help him pay rent and things? Lol I'm so lost. Thank you so much!!