Learning Rails will teach You a lot about MVC pattern. Those are knowledge You can port them to Phoenix, because it’s similar.
Except for the language, the main difference is Ruby use Object Oriented Programming, Elixir Functional Programming.
It’s like night and day…
Yes fun, like fun in functional.
If You are new to programming, your plan is very suited. Maybe You might learn the latest Phoenix, because it brings new concept to the table, liveview in particular.