How to go in code playground

Answer 1

How to find it?

Answer 2

yes

Answer 3

From the start page you can go right, there's a heading "code playground". If you press + you're in there.To find your saved codes, you can use the filter.
When you open your profile, you can also go to My codes, there are only yours. In the playground, you have to take care of the necessary imports.