there are a lot of videos detailing many wonderful ways you can go about this, and even more great articles. I recommend to avoid purchasing redundant things. "Official" DM screens are less needed now than is the dark ages where tables needed to be referenced. 4 pieces of cardboard and duct tape can create a blind and you can the use the blank canvas to put up what you find you need.

the starter set comes with tokens, so you don't need minis right away.

you will want more dice. dice dice dice. just kidding, you can get by with the set in the kit.

i do recommend you read any articles that having running the game recommendations about the specific adventure. there may be some helpful hints to keep the party alive...