RegexOne

Курс, который научит вас работать с регулярными выражениями (regular expressions). Содержит текстовые объяснения и интерактивные упражнения.

Цитируем:

«Regular expressions are extremely useful in extracting information from text such as code, log files, spreadsheets, or even documents. And while there is a lot of theory behind formal languages, these sets of lessons and examples will explore the more practical uses of regular expressions so that you can use them as quickly as possible».