Step 2. Undo the A pillar, B pillar, C pillar and headliner. These are mostly held in with push clips. Get yourself a cheap trim tool set off amazon or harbor freight.
https://www.amazon.com/SourceTon-Rem...=trim+tool+set
Under these pillar covers, you will see your sidecurtain airbags. Just disconnect the harness clip and move on. Nothing else needs to be done here.
The headliner is held in with a 3 push clips in the rear and the sunvisors in the front. The sunvisor clips push lock into the roof frame. Pop them free with a thin flat head screwdriver on the front and back to release the tension clips.