The instrument rating adds on the ability to fly through clouds to your private pilot certificate.
The most technical training course.
Gives the tools and resources to make safe and educated aviation decisions regarding more advanced weather concepts and events.
Syllabus is broken down into three main stages as well, instrument basic attitude flying first, then IFR navigation principles and instrument approaches, finally instrument cross-countries.
All locations have approved simulators that can be used to acquire training experience and proficiency.