How to proceed to make a panel?

Extensions
8

Sorry, i am trying everything, but nothing works on windows,

i cant even execute the first command of the documentation:
curl -H ‘Client-ID: onf35jrvd7mucf1pqzm633kb1dxp5f’
-X GET ‘https://api.twitch.tv/helix/streams?game_id=33214’

image
image1581×757 86.3 KB

Thanks for the help, but i guess i am wasting my and yours time.
I have done many softwares as 3D third person shooter using Unity3d, made support helpers using IBM Watson, made web pages using java/ajax/oracle for many industries here on Brazil only following the documentation, tutorials and videos. But i cant even develop a simple panel on twitch.

I will wait until twitch have more material to help new developers from zero to hero.