Focusing on words is a good way to acquire a proper mastery of the language: paying attention to new words in texts, writing down a vocabulary list, etc. We can also trace back the language and achieve a good understanding of its development and why certain changes happened throughout history. English turns your understanding of language upside down if your mother tongue is, for instance, Spanish. Learning another language will allow your brain to carry out certain linguistic-related functions that people who are not acquainted with the knowledge of other languages do not possess. ...But above all, English is a warming experience which helps us to expand our social relationships and grow professionally and personally...