10 Sites for Interview Preparation

Best Interview Prep Sites

Ace your tech interviews with these top resources for coding, system design, and behavioral prep.

The Top 10

1. LeetCode — the #1 coding interview platform.
2. NeetCode — curated problems with video solutions.
3. Tech Interview Handbook — free comprehensive guide.
4. Pramp — free peer mock interviews.
5. InterviewBit — structured prep paths.
6. HackerRank — practice + assessments.
7. System Design Primer — free GitHub resource.
8. Glassdoor — real interview questions by company.
9. Interviewing.io — anonymous mock interviews.
10. Educative — "Grokking" interview courses.

What to Prepare

Area	Resource
Coding (DSA)	LeetCode, NeetCode
System design	System Design Primer
Mock interviews	Pramp
Company questions	Glassdoor

Preparation Timeline

• 8 weeks: Master DSA patterns.
• 4 weeks: System design (for senior roles).
• 2 weeks: Mock interviews and behavioral.

FAQs

How long to prepare?

2-3 months of consistent practice for most roles. More in our interview prep guides.

Most important resource?

LeetCode for coding, plus mock interviews for confidence.