Preface: The monograph presents issues of contemporary e-learning in its broadest sense. Methods, tools, formal and legal aspects of distance learning as well as socio-ethical conditions have been discussed here.The issues raised in the monograph is particularly important in the context of changes that have been taking place in recent years. Increasingly, lots of virtual educational institutions as alternatives to traditional learning have emerged. On the other hand, at currently existing universities and schools there are more and more e-learning courses. We are in the time of transition and therefore a new model of education based on generally available online teaching resources is becoming more and more widespread.