How can you build/start your own community Internet Service Provider (ISP)?

DIY ISP

With privacy and security becoming a major global concern, I asked to myself how can I start/build my own community Internet Service Provider (ISP), and I found out from the web (obviously) that many others have had asked the same question long time before I asked the same question, found answers, and even effectively implemented the technology in their community around the world. - It is your research question.

I will share the link soon.