Ask HN: How does someone in India access the internet when taken down?

Title is the question. I'm currently living in India, and want to understand what I can do to retain internet access when the government attempts to take it down. Currently, the government run ISP appears to be shutting down, while private ISPs have not yet. I understand systems, networks not so much. - What are terms I should google to get good information? - What technology is useful in this situation? Is there some way to access the internet still? - How do I most easily setup a mesh network for communication? - What books/manuals should I keep at hand?