Need help related to HTML+CSS+JS (Twitch Chat Widget)

[keylanbelle]

Hello! I am a very beginner in coding and I only know some HTML+CSS and in process of slowly making my website. BUT! I really really want to make custom chat widget for my twitch streams and i know that people use HTMl CSS and JS to make it, but i have no idea where to start and can't find any good tutorials or anything actually.
So people make code and then put it in Stream elements (it's like a website with tools for streamers) as a custom widget.

If you know something about JS or how these custom twitch widgets work and you have time and a will to answer my questions and help me please let me know!!    Not sure if i should write my silly questions here since this forum is mostly about web and oldweb revival, right? So my topic is a bit specific 

[ThunderPerfectWitchcraft]

I never used Twitch, so I'm not sure if I get the question right, but most people don't create the core functionality themself when more complex tasks are at hand - they rather use pre-done solutions and customize them.
For "Chat Widgets" there seems to be a number available; some of them, like Slime2 are allegedly free to use.