Each closet organizer has different steps to follow, but there are usually at least six basic steps:
Find the studs behind your drywall to mount the support cleats.
Take the central tower of the closet organizer and create holes using a template for the support cleats.
Bolt the cleats into the wall and hang the tower.
Use your level to mark where the shelves and rods extend from the tower.
Cut the rod only slightly shorter than the distance between rod supports, then hang the rod.
Test the security of all hardware and shelves before using the organizer.
Some tools you might need include a cordless drill with a variety of bits, a stud finder, a hammer, a level, and a pipe cutter to cut the rod to the correct length.