This video focuses on some common errors or mistakes that people make when speaking Spanish. For example, she explains the differences between qué and cuál and when you should one or the other. Another common mistake is the verb conjugations when talking about a group of people such as a family or class. Commonly intermediate learners will use the plural conjugations when in fact they should use the singular conjugation. You may also be interested in the most common or most frequently used Spanish words. You should subscribe to her videos here.