Is it possible to earn 2-3 bitcoin by working online with out investing in an year or so...because i am not that financially strong to buy the bitcoin
It is impossible without you can buy BTC and trading it .you need 3 or 4 year to earn 2 or 3 BTC.
if you do hard work and have knowledge in trading you can earn it but not in 2-3 years it will take some time.