Hey Josie Sue! I'm confused about when to use a, an and the.

Aw shucks Pedro! That's easy!

All you need to remember is a and an are used as indefinite adjectives. For example, little cowpoke rides a horse. It's any horse and not a specific horse. You use an the same way but before a noun that starts with a vowel. For example, cowpoke rides an ostrich.

Wow! Josie Sue that is great information! Now, what about using the?

Well Paco, the is a definite article. It specifies a particular noun. For example, cowpoke rides the horse that is over there. I hope that helps!