Thank you for the advices/suggestions/tips!
3speak and DTube are maybe not for me.
To create good quality videos, everyone need a good hardware (proper video camera and computer), which I currently don't have.
Trading Steem Engine tokens could be an option, but luck is needed for that.
The guy getting 500+ Steem with investing only 8 Steem is very lucky.
I will not use bidbots. Bidbots are known to be unprofitable.