Nice - Sampling a couple of the videos, the topics are explained really well.

This makes it even harder for me to decide what to learn for my next programming language. Go, Rust, or Julia.

If you'll forgive me creeping around in your comment history, it looks like you work with PHP? I don't know Julia, but between the other two I suggest you should learn Rust.

Don't get me wrong: Go is a really good language, and eminently practical (and I am ATM working on getting productive with it myself) , but it doesn't have anything particularly novel to teach you, and part of what makes it good is that it's really easy to pick up, so it's something that you can just learn on the fly if you need to.

Inversely, Rust requires a fair bit more ramp up time if you ever need to use it in anger, and there's a lot of fairly novel stuff to learn there that is generally useful, so you'd benefit more from learning Rust as a project.

Yep, I'm a PHP dev and often do simple JS/jQuery to support my backend code. I have a very general interest in data science and embedded programming, meaning one day I might start doing something with them, but for now, I'm interested in those languages for web development. The following frameworks were especially interesting

Go: https://github.com/gin-gonic/gin

Rust: https://rocket.rs/

Julia: https://genieframework.com/