Guides for engineering students and freshers

Straight answers to the questions B.Tech and MCA students ask while preparing for placements. Every guide answers its question in its opening lines, then shows the evidence behind the answer, with each source linked so you can check it yourself.

• 17 October 2026

  LLD vs HLD: Which a Fresher Should Learn First

  Should I learn HLD or LLD first?

  High-level design (HLD) decides a system's architecture: its components, how they communicate, where data lives and how it scales. Low-level design (LLD) decides each component's classes, interfaces and logic. A project writes HLD first, but a fresher should learn LLD first: it builds on object-oriented programming, and it is the design skill Amazon lists for students and graduates.

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