a piece of advice
El anciano me dio un consejo útil.
The old man gave me some useful advice.
I'll give you some advice.
Let me give you some advice.
Un consejo gratis no siempre es un buen consejo.
Free advice isn’t always good advice.
El viejo me dio un consejo que jamás olvidaré.
The old man gave me a piece of advice that I will never forget.