[This version includes lectures of a legendary CS50] CS50 is Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming…

Welcome to Duolingo Express Preparation Course! This version of the course is for those of you who would like to prepare for your upcoming Duolingo…

A comic book to find out your level of English and courses suitable for you in 10-15 minutes. 

Привет, Друг! Есле тебе 7-11 лет, то этот тест по английскому языку – для тебя! Просим тебя выполнить несколько заданий на английском языке. Если какой-то…

Free ESL (English as a Second Language) Teacher Development Seminars with certificates.

Find out for free what score you can count on IELTS / TOEFL in 20-30 minutes. The test will help you diagnose the starting point in preparing for any academic exam: TOEFL, IELTS, GRE, GMAT, SAT, ACT and more.

Find out your English level for free in 10-15 minutes.