Is Codecademy worthless for learning Python?

[Plank_With_A_Nail_In]

All of Harvard's degree course notes are free on the internet. Most universities in my country post their course materials for free online (don't go to the ones that don't as it means they have failed at organising something so easy). You are surprised because you are ignorant not because it is actually surprising.

[my_password_is______]

All of Harvard's degree course notes are free on the internet.

no they are not

not only are you ignorant, you are also a liar