1. Recap Adjectives that end in –o have four forms: o, a, os, as
Adjectives that end in –or have four forms:
or, ora, ores, oras
Adjectives that end in –e or a consonant have two forms: singular and plural (*we call these gender neutral)
Adjectives of nationality that end in e are gender neutral BUT adjectives of nationality that end in conosonants DO have a feminine form.
Por ejemplo:
estadounidense estadounidense
español española

2. Recap Adjectives typically go AFTER the nouns they follow.
In English it should sound backwards.
Por ejemplo: La chica inteligente= The girl intelligent
Bueno, malo, and grande can go before the nouns they modify, but changes must be made ONLY if they are modifying a masculine singular noun.
Por ejemplo: Good friend: Buen amigo (o drops)
Bad friend: Mal amigo (o drops)
Great friend: Gran amigo (o drops and meaning changes from big to great)