Linux/low-level programming courses with chat support

I recently came across https://www.shecodes.io/workshop-plus after a friend asked if it was a good course to learn web development

I thought it was pretty cool that they give you access to a Slack channel where you could directly ask any questions or guidance, which I think is a great way to learn stuff. Having experts ready to answer any specific questions you have is invaluable!

Is anyone familiar with courses about low-level programming (Linux, Rust, network, whatever honestly) that offer this feature/perk?