When you're talking about just having bitcoins then the best source of bitcoin is an exchange with money, real money. When you're talking about having zero starting money, you could start earning by typing of captchas, signature campaigns, trading, gambling. It is a great source of bitcoins
Captchas are boring while signature campaign is acceptable, but thinking that it's a good source of income will only limit your self of exploring greater opportunities here online, we have to be more mature to look for better opportunity that could bring us good returns.
I think captcha can be the alternative if you've completed the work in Siganture campaign or any other job, if you're boring you can listen to music while completing the captcha?
I agree that captchas are boring but it's not just boring, it's time consuming like how many hours it will take before you can earn one dollar?
And also signature campaigns are a great way to earn bitcoins if you don't have the money to buy one but I agree that we should also look for a different work that we can do simultaneously with sig. campaign, that way we can earn more bitcoins and it will make our time productive .
Signature campaign is not for everybody, they are for those who have given privilege to participate in the campaign, same goes with trading and other options. I think when we say the best source of bitcoin, it is dependent on where we are excelling at. Like for example, an MLM player person would find it easy to accumulate bitcoin in participating in several MLM companies than trading bitcoin in an exchange, same goes with traders. And for those who have several miners, it would be mining.
Yes i agree with you, not all people can understand the flow of trading and i was one of them, earning bitcoins is not easy, some participate on hyip but most of the hyip are scam so instead of earning bitcoins, they end up losing thier bitcoins. The other way around was MLM and matrix, but if you are not good in referals, matrix and MLM will also not work. So if you want to earn, consider your excellence area before entering the business.