Languages
Core Java Tutorial
Learn Core Java fundamentals — from syntax to OOP, exceptions, and collections. Perfect for beginners or anyone refreshing their skills.
View Course →Javascript Tutorial
Learn Javascript fundamentals — from syntax to modern ES6+ features. Perfect for beginners or anyone refreshing their skills.
View Course →Typescript Tutorial
Learn microservices architecture — from designing loosely coupled services to communication, scalability, and deployment.
View Course →MicroServices
Learn microservices architecture — from designing loosely coupled services to communication, scalability, and deployment.
View Course →Web
Spring Boot
Learn Spring Boot essentials — from building REST APIs to dependency injection and auto-configuration. Ideal for beginners and experienced developers alike.
View Course →Servlet
Learn Spring Boot essentials — from building REST APIs to dependency injection and auto-configuration. Ideal for beginners and experienced developers alike.
View Course →System Design
Low Level Design - LLD
Learn system design fundamentals — scalability, architecture, and databases.
View Course →High Level Design - HLD
Deep dive into high-level design concepts and architecture patterns.
View Course →Interview Preparation
Java Coding Questions
Practice Java coding questions — from basic logic to advanced problem-solving.
View Course →Java Theory Questions
Practice Java theory questions — from basic concepts to advanced topics.
View Course →PostgreSQL Questions
Practice PostgreSQL questions — from basic concepts to advanced topics.
View Course →No Ads • 100% Free
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Why Choose CodeNBuild?
Beginner Friendly
Concepts are explained in plain English with real-world examples, ideal for new developers.
Project-Based Learning
Build real projects while learning — from system design to frontend and backend apps.
Always Free Resources
No login or signup required for core content. Learn at your pace with no friction.
Always Free Resources
No login or signup required for core content. Learn at your pace with no friction.