Work for it. At start I didn't go to those investing website because there is too much risk. Make your way into just knowing it and getting some freebies and try to enjoy the satoshis that you will receive. Look at how much it really cost then maybe after all that you will have the knowledge to face trading and investments.
I wouldn't depend on some freebies and then be content with that. I will work for bitcoins and then even improve my skill for that certain field. For example, I can do data encoding since I can type fast because I worked some sidelines for that before. But data encoding is boring, I have to step up my game. What else are there that needs some typing skills and would require some thinking? There's programming. I have to learn programming and then offer my skills. When there are clients asking for projects that I don't know how to do, I would do my best to learn that particular topic. Eventually, I will master more and more topics on programming. That's how it should be for me.
Freebies are just for promotions and it's not a good source of income.