Not able to follow example from "Getting started with OpenAI"

Hello ,

Recently enrolled for " Mastering Generative AI with OpenAI" , In second module “Getting started with OpenAI” for topic “OpenAI playground” , i am not able to follow as the options in the example looks different than the one what I see for example after signing up for platform.openai.com and logging in I see a different view and don’t see an option “playground” , I see after signing up and logging in I see I don’t have any free credits , how else this can be accessed for learning purpose.