After water damage, put safety first. Early action can help limit further damage when it is safe to act.
Shut off the main water supply only if you can reach it safely. Keep away from electrical hazards and unstable areas.
Stay out of standing water near electrical equipment. Shut off power only from a dry, safe location; otherwise, contact an electrician.
Photograph and video every room before anything is moved. Your carrier will want it and memory won't cover it.
Move belongings to a dry area only when access is safe and the water is not contaminated. Leave heavy items and hazardous areas to professionals.
Mold can establish within 24–48 hours. Household fans do not dry a wall cavity — commercial equipment does.
Calling before you've spoken to the adjuster is fine. Mitigation is expected of you under most policies.