How do I get access to practicing Ruby on the Intro to Programming page?

I am only able to see videos of the instructor and not the Ruby platform to write code. It’s weird to only watch videos and not be able to apply. Can someone please help me?

I know this is delayed but hopefully you solved your answer by now. If not, the intro to programming course has a section called “first program” which introduces the coding environment. It is immediately after the first 4 videos.