These are good overview resources of the whole life and death of stars. Read and watch these before beginning your preparations for your youth. They are at about a high school reading and content level.
Read - NASA Universe: Stars
Read - Understanding the Life Cycles of Stars
Read - Chandra: Stellar Evolution & Stellar Evolution Illustrations
Read - Life and Death of a Planetary System
You can skip Chapters 3-5 because they are about the formation of planets.
Watch - NOVA: Stellar Life Cycles
Watch - The Life Cycle of Stars
Watch - ESA: H-R Diagram Animation
Explore - ViewSpace
This resource helps you explore the universe with interactives and videos that explore objects using different types of light. This site has a quick introduction to their interactives and a nice visual of a firefighter saving a life using Infrared light.
Explore - Girls STEAM Ahead Stars Resource Guide
Explore - Afterschool Universe
This is a great resource if you want to go even deeper with your youth. Their curriculum is targeted at middle school students in an out-of-school-time setting.