Algorithms & Data Structures for Beginners
Master the fundamentals of arrays, linked lists, trees, graphs, and essential algorithms.
25 hrs·Medium
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Courses.
Data Structures & Algorithms
2 courses
System Design
2 courses
System Design for Beginners
Learn scalability fundamentals, load balancing, caching, and database design basics.
10 hrs·Medium
System Design Interview
Practice real interview questions: design Twitter, Uber, and other large-scale systems.
10 hrs·Medium
Python
3 courses
Python for Beginners
Start from zero with variables, loops, functions, and core Python concepts.
12 hrs·Easy
Python for Coding Interviews
Python-specific tricks, built-in functions, and syntax patterns for interviews.
8 hrs·Easy
Python OOP
Classes, inheritance, polymorphism, and object-oriented principles in Python.
8 hrs·Easy
Full Stack Development
2 courses
SQL for Beginners
Query databases with SELECT, JOIN, aggregations, and understand relational models.
10 hrs·Easy
Full Stack Development
Build complete web apps with React, Node.js, databases, and deployment.
20 hrs·Medium
Object Oriented Design
2 courses
Object Oriented Design Interview
Design parking lots, chess games, and other OOD interview classics.
8 hrs·Easy
Design Patterns
Factory, singleton, observer, strategy, and other essential design patterns.
8 hrs·Easy
Lessons.
All Lessons
11 lessons
How to Use Neetcode Effectively (Coding Interviews)
Python Cheat Sheet
Big-O Notation
8 Data Structures for Coding Interviews
Sorting Algorithms Cheat Sheet
5 Graph Algorithms for Coding Interviews
8 Design Patterns Every Programmer Should Know
20 Must-Know System Design Concepts
30-Day Javascript Coding Challenge
Design a YouTube Clone
MongoDB Crash Course
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