tech questions from the OP should really go into the tech forum to get more eyes and also to be searchable in the future.
but as for the brake lights:
check the fuse
check power going to the brake switch
check power coming out of the brake switch when depressed.
clean the ground behind the drivers side taillight and check that the bulbs are in fact double filament.
and for the hazards, do your turn signals work? if so, swap the round clicker pot in the fuse box with the turn signal pot and see if they work again.