Channels

Popular DSA YouTube channels, playlists, and teaching resources.

NeetCode
Strong for interview-style problem explanations and structured revision.
take U forward
Widely used for Indian placement prep, sheets, and topic-by-topic DSA coverage.
Abdul Bari
Excellent when you want deeper conceptual understanding of algorithms.
mycodeschool
Older but still very clear for trees, linked lists, and core DSA intuition.
William Fiset
Great for serious algorithm explanations, graph topics, and implementation ideas.
Back To Back SWE
Very useful when you want slower walkthroughs for common interview problems and patterns.
CS Dojo
Good for beginners who want cleaner explanations without jumping too fast into advanced problems.
Errichto Algorithms
Strong pick when competitive programming and harder problem-solving are your main goal.

Websites

Useful DSA websites for concepts, theory, and visual understanding.

DSA roadmap
Useful when you are confused about learning order and topic coverage.
DSA tutorial
Broad reference site for concepts, examples, and quick topic refreshers.
VisuAlgo
Very useful for visualizing trees, heaps, graphs, and core operations.
cp-algorithms
Best once you already know the basics and need stronger algorithm references.
Programiz DSA
Helpful for beginners who want simple topic pages before jumping into tougher practice.
USACO Guide
Excellent for structured competitive-programming progression with curated modules and problem sets.
Topcoder Thrive Competitive Programming
Useful when you want tutorials and articles tied more closely to contest-style thinking.

Books

Strong DSA books for theory, reference, and structured self-study.

Introduction to Algorithms
The standard deep-reference book for algorithms when you want rigor, breadth, and long-term usefulness.
Algorithms, 4th Edition
Excellent if you want strong coverage of classic data structures and algorithms with a practical Java-oriented companion site.
Grokking Algorithms, Second Edition
One of the easiest modern entry books when you want visual explanations before harder problem solving.
The Algorithm Design Manual, 3rd Edition
Great practical bridge between theory and interview-style thinking, especially for recognizing problem patterns.
Open Data Structures
A strong free textbook for data structures with implementations and analysis in Java and C++.

Repos

GitHub repositories for implementations, study plans, and references.

TheAlgorithms / Python
Massive open-source collection of algorithm and data-structure implementations.
javascript-algorithms
Clear explanations plus implementations, especially nice if you learn visually.
coding-interview-university
A long-form study plan for students who want a more complete CS + interview base.
doocs / leetcode
Useful when you want multilingual solutions and fast comparison after solving.
TheAlgorithms / Java
Massive Java-focused algorithms collection for learners who prefer implementations over theory-only notes.
TheAlgorithms / C-Plus-Plus
Useful if you want a broad C++ implementation reference across standard DSA topics.
cp-algorithms repository
Helpful when you want the article source, history, and community-maintained updates behind cp-algorithms.
KACTL
Advanced but excellent competitive-programming template library once you start caring about speed and contest utility.

Roadmaps

Sheets and roadmaps that help you decide what to practice next.

Striver's SDE Sheet
Still one of the most-used interview prep sheets for structured problem solving.
Striver's A2Z DSA Course Sheet
Better if you want a full progression from basics to stronger interview prep.
NeetCode Roadmap
Clean topic grouping and popular problem collections for interview prep.
Grind 75
Customizable problem list by the author behind Blind 75.
Top Interview 150
A strong structured list when you want a longer LeetCode path than Blind 75 or Grind 75.

Platforms

Practice platforms and judges worth using regularly.

LeetCode problemset
Most-used platform for interview-style DSA practice.
CSES problem set
Great for cleaner progression once you want steady topic-wise practice.
AtCoder tasks
Strong for clean contest problems and structured competitive-programming practice from beginner to advanced.
Codeforces problemset
Best for harder problem solving and contest-style thinking after basics.
CodeChef practice
Useful for topic-based DSA drills, older contest archives, and beginner-friendly competitive-programming entry.
HackerRank data structures
Good for easier topic entry and quick confidence-building practice.
InterviewBit programming
Structured practice flow with interview-style progression.
GeeksforGeeks practice
Good when you want topic filters, company-style practice, and a large question bank in one place.
HackerEarth practice
Useful for tracked topic paths across data structures, algorithms, and contest-style drills.
Kattis problem archive
Strong archive for steady problem solving, especially if you want judge-style practice outside the usual interview sites.
Topcoder practice
Worth using when you want older contest traditions, tutorials, and challenge-oriented problem solving.
CodeSignal interview prep
Useful for company-style assessments and interview-prep exercises that feel closer to hiring screens.
Codewars
Great for repeated short problem solving and language fluency once you want lots of bite-sized challenges.
Coderbyte
Good for interview-style challenges, assessments, and guided prep when you want another structured platform besides LeetCode.
CodinGame
Nice when you want coding challenges that feel more game-like and less dry than standard judge platforms.
SPOJ classical problems
Classic online judge with a huge archive when you want older competitive-programming style problem volume.
UVa Online Judge
Old-school but still useful for deep archive practice and ICPC-style training problems.
Project Euler
Excellent for math-heavy algorithm thinking when you want puzzle-style problem solving over interview prep.
Exercism tracks
Best when you want lots of small exercises plus mentoring while building fluency in a specific language.
LintCode problems
Alternative interview-prep problem bank that can be useful when you want more structured topic drilling.
Advent of Code
Great for seasonal puzzle solving and algorithmic debugging practice through archived yearly challenges.

Other resources

Problem sets, interview question lists, and extra DSA shortlists.

Best practice questions
A strong curated question path with explanations around what to practice.
NeetCode 150
Widely used interview list when you want a more focused LeetCode-style set.
Blind 75 and Grind 75 reference
Commonly used shortlist for interview prep when time is limited.
Algorithms study cheatsheets
Great for fast revision of common DSA topics, corner cases, and interview-oriented patterns.

Courses

Long-form courses and structured programs worth checking after trying the free options first.

AlgoMonster
Popular for pattern-based interview prep and structured explanations.
Grokking the Coding Interview
Pattern-first format that many learners use when they want more guided prep.
Master the Coding Interview: Data Structures + Algorithms
Broad beginner-friendly paid course if you want long-form video structure.
Introduction to Algorithms
Excellent free academic option if you want lecture videos, notes, and problem sets with stronger theory.
Algorithms, Part I
A respected structured algorithms course for learners who prefer a formal progression and assignments.
Data Structures and Algorithms Specialization
Broader multi-course path if you want deeper coverage across data structures, graphs, strings, and advanced topics.
AlgoExpert
Popular paid interview-prep platform when you want curated video explanations and a tighter path through common patterns.