Open these packs in order:
You draft in a team of two, and the packs above are what your team gets between the two of you. Your team opens a booster, drafts two cards, and passes the rest to the next team. Direction changes with every booster.
Cards your team drafts are one shared pool, and are not assigned to either of you as you draft them. From that pool and any number of basic land cards, each of you builds their own 40 card deck. Cards you don't use are a shared sideboard.
Games are played as Two-Headed Giant: two teams of two players, each team sharing a life total of 30 and taking their turns together. See rule 810 for the full rules.
Drafting is not supported on this website.