Before System Design i insist you to learn Backend fundamentals
If you don’t have fundamentals of backend i suggest pick one stack (MERN for begineers)
build some projects and come back again because without that it will go above your head.
The playlist below you can watch even without knowing any stack for backend.
I suggest this playlist before going to System Design.
https://youtu.be/0Rwb4Xmlcwc?si=g7ZCm7Z9NdyhSkqF
(complete the playlist and then only move to HLD → LLD)
In this notion docs I have added all the playlist and whitepapers to read to become a better engineer and have a strong foundation.
HLD (High Level Design Fundamentals)
Interview Preparation Playlist by ByteByte Go
Here’s a detailed breakdown of all the topics covered in the video for both High-Level Design (HLD) and Low-Level Design (LLD), organized step-by-step as presented by Shradha Ma'am: