1. Nouns pg. 60 Cap. 2 Gramática

2. Nouns and Gender In Spanish, nouns are either masculine or feminine.
Masculine nouns usually end in o
Ex. Carro
Feminine nouns usually end in a
Ex. Comida

3. Definite Articles Mean the and there are 4 forms in Spanish:
Masculine
Singular El
Plural
Los
Feminine La
Las
When using the verb gusta(n) to say someone likes something, place the article el, la, los or las in front of the noun.
Ex. Me gusta la pizza. 

4. Making Nouns Plural If the noun ends in a vowel add s.
Ex. carrocarros
If the noun ends in a consonant (non vowel) add es
Ex. animalanimales
If the noun ends in a z, change the z to a c and add es.
lápizlapices
The articles also need to be made plural:
el becomes los Ex. el carrolos carros
la becomes las Ex. la pizzalas pizzas