does A go right before the noun of the sentence?
ok so when im using "A" in a sentence, it goes directly in front of the noun??
Although it might help being more specific, maybe clarifying with an example, but for a short answer I'd say yes.
Hay que decirle A tu mejor amigo. You gotta tell your best friend.
Let me clarify, you must be talking about about people to include the A, but then again that's not what you are asking, or is it? (to the poster)
You use it for people and pets if they are the object of the sentence.The link will help you to understand.
I would think it only goes in front the noun if it's referring to a person, as the personal a. Necesito limpiar la mesa. Quiero a mi madre, but then again I'm not fluent like Daniel-Joseph.