I had been introduced here by one of my friends, who insists me that bitcoin is future and i should learn about it
Have that friend closely 
Just kidding, I don't know what kind of person he is. Recommending to learn more about bitcoin (specifically, not cryptos!), does sound like a life advice to me now more, though. There's a mountain of information to study. I'd begin with learnmeabitcoin.com as I consider it a treasure for the Bitcoin community. @mk4 also shared some good links.
Also: Use this place a lot. Let us resolve your queries, that's why forums exist.