The Faculty of Computer Science and Information Technology at Karbala University organised a training course on common errors in the Arabic language and the basics of formal communication for the third day. The course aims to shed light on the concept of language and its relationship with thought, its levels and connotations, as well as talking about some common errors that are commonly mentioned in cultural circles. The course included a number of topics, the most important of which are the definition and importance of language, as well as the presentation of some common errors and how to correct them.