Most GitHub guides recommend a version of this four-step process to ensure you don't miss anything critical: Step 1: Understand the Requirements (The "Discovery" Phase) Before drawing a single box, clarify the scope.
Buy Alex Xu’s Volume 1 & 2 (legal, updated, supports the author). Then, use GitHub to augment your learning with visual diagrams and mock interview transcripts.
kousiknath/SystemDesign
Arjun was skeptical. But desperate.
How to Ace the System Design Interview: Top GitHub & PDF Resources