good experience

all course is divided into units, each of them has a video explanation and about 15 pages of theory, that you have to read. After you read 1 unit, you take a quiz and test your knowledge what you learned by reading and watching the video. After you finish all the units, you can have a certificate. Everything is clear, detailed, so it's a nice experience, which give you a good quality knowledge and teaches you exactly what you can need during the lessons. I recommend everyone, who doesn't have time to attend classes and want to make courses online at your own comfortable schedule