If you want to earn money by YouTube for this you create a YouTube channel. When your channel is created you have upload videos on your channel. If you want to earn by YouTube then your channel have to get 4000 hours watch time and 1000 subcribers in 1 year. If you completed createria then you have to create account on Google Adsense because Google Adsense send ads on your videos and ads make money. For getting more subscribers and views you have rank your videos to trending section of YouTube. Once your video is ranked in trending section of YouTube than you will get more subscribers per day.