is their any institute or college that can grow knowledge about bitcoin? or any other way to get clean knowledge?
If you want to learn it the formal way, there are already existing universities offering these courses. You can search the universities in your area and ask if they offer these courses because there is more demand nowadays. Check this news
http://bitcoinist.com/university-students-rush-take-cryptocurrency-blockchain-courses/If you want, you can check also and take the courses online. You can check here
https://www.coursera.org/learn/cryptocurrencyYou have a lot of choices, it depends on you in what way you want to learn. If you want to be just as the majority, you will read whatever information is possible. There are a lot of resources in the net. In this forum alone, you can find a lot of information or you can watch videos in youtube as well.