start your coding journey with our expert-designed, job-focused practical coding courses. learn to code from scratch with interactive, beginner-friendly lessons.

evaluate candidates quickly, affordably, and accurately for assessments, interviews, and take-home projects. prepare for interviews on the #1 platform for 1m+ developers that want to level up their careers.

a computer science portal for geeks. it contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview questions.

well organized and easy to understand web building tutorials with lots of examples of how to use html, css, javascript, sql, python, php, bootstrap, java, xml and more.

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

codeforces. programming competitions and contests, programming community

learn to code in python, c/c++, java, and other popular programming languages with our easy to follow tutorials, examples, online compiler and references.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

practice sql querys with an online terminal. solve sql query questions using a practice database. learn and improve your sql skills.