Every day on the Internet appear online courses (good, bad, free, expensive, legal, illegal, ...). They can be of great benefit, especially to people who, because of a lack of free time can not attend face-to-face teaching, and have a duty of continuous professional development. In this great offer, it is really difficult to choose the right one that will fully meet the strict criteria. In this paper, we point to the conditions and requirements that may significantly facilitate students making their final decision regarding the selection of different forms of online training.