Advice or Advise
It is a noun meaning "proposal or recommendation".
I strongly need some good advice about studying abroad.
On your advice, I decided to go to Spain for a vacation.
If you take my advice, you will not regret it.
Advice has irregular plural and is both singular and plural.
(Take an advice / Take many advice)
It is a verb meaning "to give advice or to recommend".
I advise you to buy this bracelet.
My counselor advised me to talk to professor Hardy.
One of my friends advised me to see this movie.
Choose advice or advise.