One of the first things you should have noticed about Spanish when you saw it written were the differences in punctuation.  In Spanish, questions and exclamations have a punctuation mark before and after the phrase.  (It's a little like how we use quotation marks.)  To begin a question, write/type "¿" then type the question and end with "?".  Do the same thing for exclamations:  "¡" word "!"

Punctuation in Spanish

Punctuation in Spanish

It's easy to type the upside down question mark or the upside down exclamation point on your Chromebooks.  First, make sure you are in the INTL keyboard.  To change to the INTL keyboard, just click on the clock in the bottom right corner, find the Settings gear.  Type keyboards.  Click to Enable.  Then simply hold down the Right ALT button and type the question mark / exclamation point to turn them upside down.

Punctuation in Spanish

Something else you probably noticed were accent marks.  Spanish can put an accent mark on any vowel:  á, é, í, ó, ú.  Type the apostrophe and the vowel, and the apostrophe turns into the accent mark. Rarely (but sometimes you see these accents:  ä, ë, ï, ö, ü.  Do the same thing, but type Shift + Apostrophe and then the letter.

And also, there is ñ.  To type this letter, hold down the shift and the ~ button on the top far left, then type n.

Vocabulario

Vocabulario

Vocabulario

Vocabulario

Vocabulario

Vocabulario

Formal vs. Informal Speech

Formality in speech is a little more important in Spanish conversation than in English.  It is important to use the appropriate respect. 
Informal conversation is friendly; it's meant to be how friends and family speak to one another.  Any expressions with "tú" or "te" indicate informal speech.  Some words like "hola" and "chao" are also considered informal.
Formal conversation is polite; it's meant to be how strangers or professionals speak to one another. Any expressions with "Ud." or "le/se" indicate formal speech. Titles of respect (Señor, Señora, Señorita) are used in formal speech. Other formal expressions include "Buenos días", "Buenas tardes", and "Buenas noches".

​Formal vs. Informal Speech