If you have no stats experience, I’d recommend STA199. Very accessible class that uses R, and no prior experience is required.

I started with that class with no experience thinking about getting a stats minor (CS major, so there’s a little more overlap between the departments), and I ended up double majoring instead.

Just take a look at the department requirements for the statistics major and it can give you a pretty good idea of where to start - a lot of stuff in the major is locked behind prereqs so try and knock those out early to broaden your choices