Regular verbs in Spanish come in three classes. Those ending in -ar, those ending in -er, and those ending in -ir. Knowing the conjugation of the present indicative of -ar verbs will bring a lot of new possibilities into your Spanish.

To conjugate a regular -ar verb, first remove the -ar ending. What is left is refered to as the verb stem. For example, the verb stem of estudiar is estudi. Now combine the verb stem with the proper ending according to the following:
estudiar = to study
yo estudio = I study
tú estudias = you (fam.) study
Ud./el/ella estudia = you (form.) study, he/she studies
nosotros estudiamos = we study
vosotros estudiais = you (fam. pl.) study
Uds./ellos/ellas estudian = you (form. pl.) study, he/she studies
Here are some other useful verbs ending in ar.

We've already seen a few adjectives, and we already know they differ in masculine and feminine forms. Now we'll look into adjectives a little deeper.

In most cases adjectives follow the noun they modify. You would say car red instead of red car. In fact, when you are learning it helps to think in English mutated to conform closer with Spanish grammer constructs. When you want to say red car in Spanish, think car red and then translate.

As we already know, many, (but not all), adjectives differ in masculine and feminine forms. The form used should agree with the noun it modifies. However, it should also agree in number. For example:
libro rojo,
pluma roja,
libros rojos,
plumas rojas.
To pluralize an adjective, use the same rules we already used for pluralizing nouns.

When a single adjectives modifies a group of nouns, the plural form is used, and the feminine form is used only if each noun in the group is feminine.
el libro y la pluma rojos
la casa y la puerta son amarillas

There are only two contractions in Spanish, and they are easy to remember. The first is a followed by el becomes al. The second is de followed by el becomes del. Unlike the contractions in English, these contractions are never optional.