I would recommend 3blue1brown only if you've already covered the material in another way. It's a great way to get some new intuition about things, the videos can help something 'click' and are a pleasant watch with an obviously high production quality. I just don't think they are great for being your first exposure to a topic.

Thanks, I'll check it out. This is one of those things which I never knew I didn't know about.

Goes very well with your username.