As with the passage of time more people are entering the cryptoworld and we can see there are many scammers nowadays so can you suggest any ways where newbies could earn btc without investment.
I advise you to buy bitcoin, it will be much better for you and it will save you from wasting time. But you can participate in bounty campaigns to earn extra income, extra because it is not guaranteed money, the project can be scam and you will not be paid. That is why it is much better that you buy bitcoin and hold for many years and participate in bounty campaigns to have extra income