How can I know more about bitcoin?
What is this?
When & How it use?
Why this is invented?
Youre a student. You should know how to use a search engine on the web to find out and read more about those questions. Thats the least you could first do before you come on here and ask what you dont still understand after reading. Its better to read, research things and get an opinion for yourself and not allow someone feed you their own thoughts and opinions about things.
That is what Id expect from a student.
Welcome to the forum.