I think it’s definitely really early to say if they have proper romantic interest in you, given you’ve only known each other about a week? But from your post, it seems like you two have points in common and have a lot to chat about, which is often a good foundation for relationships, friendly and romantic.
In terms of learning Linux, it’s probably ideal to have a bit more of an outline of what you want to start teaching her because it’s a huge jump into a new OS (not that I know much of myself). She may not know where to ask you to start and would appreciate more suggestions from you on where to begin, like telling her “Today, let me show you (practically) how to install (OS) on a system and navigate it” and going off that.
I think the tl;dr would be: Have a Linux lesson plan, expect friendship first. Take it slow.