Advice and advise are normally confused. 'Advice' is a noun and it means 'a suggestion' or 'a beneficial course of action'. Advice is a non-count word so it has no plural and can't be used with the indefinite article:
Parents give good advice. NOT Parents give good advices.
He gave me a good piece of advice. NOT He gave me a good advice.
'Advise' is a verb and it means 'to give advice'
If you ask me, I'd advise you to take the job offer.
You are lucky if you have friends to advise you.