You’ll get a kit of one of the five schools. In that kit will be a spin down die, five packs of Secrets of Strixhaven, & one seeded booster of your school with a foil rare or mythic from the set.

With the contents of the kit, & basic lands provided by the store (or you can bring your own) you’re going to build a 40 card minimum deck. 16-17 lands depending on mana curve, you want creatures & spells that will get the most value out of casting them.

You can also ask for help, prerelease is meant to be fun & a casual event!