@Loukas389 Question 1 : I wouldn't for a few reasons. Are they CC0? Even if they are, you may still get sued if they actually has a copyright attached to them and someone (not the owner) shared them as CC0. As the user, you are liable and responsible for that. Do you have rights to use them for commercial use? Make sure you at least have a standard license. I only use stockphoto sites where I pay for the photos and they have insurance in case of a dispute. Yes, it is more expensive up-front, but the $1-5 I pay per image is much more fun than getting sued for 1000s of dollars. Question 2 : Mostly same as above, technically music that old is in the public domain, but the recordings of it rarely is. If I did a Bethoveen recording and you used it, I could sue you. Just because the notes are public domain, doesn't mean the performance is. Question 3 : Ugh we would have no clue, go look at the insights tool, look at revenue, course numbers, how good the competition is and so on. Question 4 : It depends, is your content good, is there a need in the market, do you know how to promote yourself, and 50 other things? I started as a side-gig, after 1 1/2 year I made the same as I did on my day-job, now 10 months later I make 2x that.
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