Notice that Spanish has informal and formal ways of saying things. This is because there is more than one meaning to "you" in Spanish (as well as in many other languages.) The informal you is used when talking to close friends, relatives, animals or children. The formal you is used when talking to someone you just met, do not know well, or someone for whom you would like to show respect (a professor, for example.) There are also two ways to say you in the plural, used when speaking to more than one person.

Encantado, cansado, enfermo, and aburrido are the masculine forms of the words. If the words refer to a woman or are spoken by a woman, then the o changes to a.

Stress: Just as in English, Spanish stresses a certain syllable in a word. If a word ends in a consonant, except s or n, the stress is on the last syllable. If a word ends in a vowel, or s or n, the stress is on the second-to-last syllable. For words that do no follow these rules, an accent is written over the vowel so that you will know to stress that syllable, as in el pájaro (bird)

Note: The Spanish language academy no longer considers the ch, ll or rr to be separate letters of the alphabet.

Note: If you are just saying 100, you use cien. If it's over 100, you use ciento. So 101 is ciento uno. And 156 would be ciento cincuenta y seis. Also you can also use dieciséis, diecisiete, dieciocho, and diecinueve for 16, 17, 18, and 19, respectively. They are pronounced the same but are combined into one word. Additionally, 21-29 can be written as one word (veintiuno, veintidós, veintitrés, etc.), but you need to use y for the rest of the numbers.