Adjective a little is used with uncountable nouns, Adjective a few is used with countable nouns.

They mean “not many, much”, “a small amount, number”

• I have a little money.
• Sleep a few minutes.
• We’ve had a few problems.
• I gave the baby a little milk.
• Janet asked a few strange questions at the meeting.
• Sally is trying to lose a little weight.
• We are going to meet a few friends after work.
• The tourist need a little information.
• Can I have a little sugar please?
• I have a few friends at school.
• I need a little time to finish it.
• With a little training Sam can learn to do it.
• Can I give you a little advice about your new school?
• You can repair your bicycle with a few simple tools.
• We have a few problems with the new laptop.