https://www.youtube.com/@MensFashioner
She's a celebrity menswear stylist:
https://www.nytimes.com/2015/12/13/fashion/the-woman-who-dre...
I started watching her videos out of curiosity, and then was really surprised to realize that dressing well is a skill like any other. And that it's not about spending a lot of money, but mostly about learning to pick colors and types of clothing that work well together and work for your specific skin tone and body type, and that are appropriate for the season and setting.
Some of the videos can be a bit clickbaity ("10 things you should NEVER wear!"), but she has a lot of videos that just cover the basics that are really genuinely valuable -- she clearly really cares about trying to help guys dress better. It's a lot of advice that I really wish I'd had someone teach me growing up.