Here’s some wonderful organizations and sites to explore!
OrigamiUSA
A worldwide origami organization that connects origami lovers all over the world. They provide workshops on various paper folding techniques and models, or participate in the convention!
https://origamiusa.org/
Origami Resource Center
Find plenty of models to fold to get started
https://origami-resource-center.com/#gsc.tab=0
The Origami Paper Shop
Shop for a wide selection of authentic Japanese papers for origami!
https://www.theorigamipapershop.com/