Model rocketry is an awesome, fun hobby for kids and adults. The hobby dates back to the Space Race, and it was invented as a way for teenagers to learn about the principles of rocket flight safely, while having fun building and flying their own rockets.
Model rocketry is an exciting but safe hobby with a strong STEM component, so it's a great educational tool.
Model rockets use lightweight, soft materials such as cardboard and balsa wood, and certified, tested, commercially-available model rocket motors or engines. More information on model rocket safety can be found on the website for The National Association of Rocketry, at https://www.nar.org/safety-information/model-rocket-safety-code/
At the NAR website, you can also find out about model rocket clubs near you, where you can meet other rocketeers, find a good place to launch, and even get a certification to fly high power rockets - the bigger, more "grown up" version of model rockets.
My blog is at rocketn00b.blogspot.com, where I sometimes post tips for beginners on building model rockets, as well as sometimes here on YouTube. If you want to know some good places to buy model rockets and supplies online, check out my YouTube video here:
A great resource to learn more about the principles of model rocketry is the book The Handbook of Model Rocketry by G. Harry Stine and Bill Stine. The book can be ordered on Amazon here:
Another great book is Make: Rockets: Down-to-Earth Rocket Science by Mike Westerfield, available here:
Mike also has a great book on high power rocketry called Make: High Power Rockets:
I get a small commission from any purchase you make by following my Amazon links, so it supports my channel, but it doesn't cost you anything extra.
Drum loop in this video purchased from the website of @DanMayo