I think you understand the principles. You need to further understand the "best practices" that have been determined for the area, climate, and type of structure you have. That comes from online research, or from paying a contractor with a reputation in the local area, or from hiring a consultant from the Building Science Corporation: https://buildingscience.com/
It would not be beyond reason to attend one of BSC's "Building Science Fundamentals" classes, such as:
https://buildingscience.com/events/renovation-and-rehabilitation?sku=BSO-18-001
...because many of the things you think you know are wrong, and some important things are not obvious. I'm interested in a distinct type of structure, a timber frame saltbox, and I want complete fire resistance. Therefore I have attended a 1-day workshop on timber frame construction, and researched the following: timber framing, saltbox homes, passive homes, SIPs (structural Insulated panels), magnesium oxide SIPs, magnesium oxide siding, solar PV systems, wind turbines, energy efficient appliances, energy efficient HVAC, early Colonial architecture, etc. etc. etc.
Planning is everything. When the time to act comes, you are ready and can make the correct choices the first time.