Skill
Data structures & algorithms
Arrays, lists, hash maps, trees and graphs with the classic algorithms and complexity analysis — typed out, not memorised, for interviews and for real code.
Do these first
What you will be able to do
- Implement and trace the core structures and algorithms
- State time and space complexity of a solution
- Apply recurring patterns (two pointers, sliding window, DP) under time pressure
Curated resources
Start with the pick, then branch out
Scores are LearnPath editorial opinions (clarity, cost, freshness, project density) — not an objective ranking. Every YouTube item is embedded officially after a click-to-load facade.
12h 31mProject-basedLearnPath pickyoutube coursebeginner
Data Structures and Algorithms in Python - Full Course for Beginners
freeCodeCamp.org12h 31m
Twelve and a half hours of Python implementations of every structure and algorithm in the companion course, ending with interview-style problem walkthroughs. Use it when you want the algorithm practice to double as Python practice.
Score 85
Watch
48h 50mAdvancedMore curatedyoutube courseadvanced
Data Structures and Algorithms Mega Course – Master Technical Interviews in 49 Hours
freeCodeCamp.org48h 50m
A 49-hour mega course published in late 2025 that goes past the classic curriculum into pattern-based interview preparation. The most current large-scale DSA pack we verified, and the only one that also covers how to structure practice sessions.
Score 85
Watch
5h 22mLearnPath pickMore curatedyoutube courseintermediate
Algorithms and Data Structures Tutorial - Full Course for Beginners
freeCodeCamp.org5h 22m
Covers arrays, linked lists, hash tables, trees, graphs and the classic algorithms with hand-traced examples and complexity analysis in every section. The implementations are typed out on screen rather than shown as finished code, which makes it usable as a do-it-alongside course.
Score 84
Watch