Carlos speaks to us about the nuances of Spanish collective nouns, which are nouns that refer to a number of beings within a specific category.

Carlos teaches us a plethora of Spanish demonyms, or proper nouns used to refer to the natives or inhabitants of certain countries, states or cities.

Carlos familiarizes us with some Spanish social media lingo, specifically for Facebook and Twitter.

Carlos explains to us about ordinal numbers, or those numbers used to express order or succession.

Carlos explains to us about cardinal numbers in Spanish, which are used to count and quantify elements.

Carlos teaches us a trick for conjugating verbs with the "voseo" and challenges us to distinguish verbs in sentences which have been conjugated with the "tuteo," "voseo" and "ustedeo."

It's Cleer's first day at her new job and a workload already awaits her.

Carlos explains the forms of address used to address several conversational partners: "vosotros" and "vosotras," which tend to be used in Spain, and "ustedes," which tends to be used in Central and South America.

Cleer awaits a phone call from Lida to find out whether or not she got the job for which she recently interviewed.

Cleer attends her first post-college interview for a marketing position.

Known as the "tuteo," the "ustedeo" and the "voseo," Carlos explains the historical roots and evolution of these varying ways of saying "you" in different parts of the Spanish-speaking world. Factors which affect which form is utilized by a particular person in a particular situation include that person's country of origin as well as the relationship between the speaker and the person to whom he or she is speaking.

Freshly out of college, Cleer Oviedo sets up an interview for a potential marketing job.

Carlos explains to us the three manners of addressing a conversational partner in Spanish: "tú," "usted" and "vos." Although all three of these personal pronouns could be translated as "you," the one that is utilized in a particular context depends upon factors such as the region where one lives as well as one's relationship with the person with whom he or she is speaking.

In this final part of the videos dedicated to accentuation, Carlos explains diphthongs, triphthongs and hiatuses.

Carlos explains the four groups into which Spanish words are classified depending upon which of their syllables is accented as well as the rules regarding written accents.