First, you have to do basic research on the keyword that you want to rank for, such as, how competitive it is, it's search volume (how many people search this per month), who are your competitors (if your competitors for this keyword have like 500k or 1Mil subs, then it's usually not worth trying to rank for that keyword.) It would be meaningless for me to tell you about this and carry on with this tutorial if you don't already know at least the basics of youtube ranking and keyword research, as well as what your overall goal on youtube is, your short term and long term strategy, your target audience, your niche, knowing how to turn your viewers into subscribers and followers of your content, and most importantly, knowing what will your content be bringing into people's lives. If you are putting out content that won't add any sort of value into people's lives, than you can forget about being successful on youtube because everyone using social media in modern society recieves an unnatural amount of information from platforms such as youtube, and if your content isn't adding value into peoples lives then it is useless.