Networking resources?

Does anyone have links to some resources where I can learn more about networking? I have the basics of a home or small business network down pretty well, but I'd like to know more about VLANs and stuff like that. Maybe some security best practices. Where can I learn about it?

https://www.routerfreak.com/how-to-become-a-network-engineer/

Thank you! I'll look that over.