is their any institute or college that can grow knowledge about bitcoin? or any other way to get clean knowledge?
You might have heard it before, but probably one of the best ways to quickly, and deeply learn about blockchain, and cryptocurrencies, is to build one of your own. It's actually a lot simpler than you might think too.
You can star that here;
https://hackernoon.com/learn-blockchains-by-building-one-117428612f46If you really want to progress a little (or a lot further) then you can start learning the main smart contract development language solidity, here's a great resource for that;
http://solidity.readthedocs.io/en/v0.4.21/Good luck.