I have tried first time Haskell in 2023 Feb - March.
I used meanwhile Elm mainly.
There is now in VSCode quite good support with plugins to Haskell.
Reading the book and doing something in ghci by myself at the same time helps learning.
Here is a modified example taken from the book, an interactive BMI-calculator.
It works Ok in local system:
MacBook-Pro myhaskell % ./bmicalc
"Input weight KG "
65
"Input height CM"
185
Weight 65.0 kg Height 1.85 m
Your BMI value 18.99
You're supposedly normal. Pffft, I bet you're ugly!
*****
MacBook-Pro myhaskell % ./bmicalc
"Input weight KG "
55
"Input height CM"
190
Weight 55.0 kg Height 1.90 m
Your BMI value 15.24
You're underweight, you emo, you!
*****
Unfortunately, it does’nt work on the playground, apparently because of readLn, so as last year.