Affiliate marketing, the first, you need to get the link. Then make the advertisement. You can use Lumen5 if you don’t wanna show your face. I added there copyscript, the marketing text. Okey now I have video. I added name on it. I analyzed it using keywords everywhere Google Chrome extension. Then I checked title of YouTube video which is not too popular but there is people who have the demand. Little bit checked also competition too. But yeah we have the title of the video. Then we use tag generator figuring out suitable tags to YouTube video. Rapidtags.io is the place.