"A few" means "some" in the sense of "not zero". For example:
Have all the guests gone home? No, there are a few people left.
Are the tickets all sold out? No, there are still a few that haven't been sold.
"Few" means "not many".
In spite of the advertising campaign, few people bought the product.
He was a lonely man with no family and few friends.
Compare this last sentence with this:
Do you think that John is lonely? I think he's fine. He has a few friends.
Can you seen the difference?
He has few friends is negative : it means that he doesn't have many friends, and so he's lonely.
He has a few friends is positive: it means that has some friends and so he isn't completely alone.
I have few problems is a good thing: it means that I don't have many problems.
I have a few problems is a bad thing: it means that that I have a number of problems.
I hope that all makes sense!
A few means a small number of something: three or four, maybe five
Few means "not many" or "almost none" and emphasizes the lack of something.
I have had a few problems with my car. (Some things have gone wrong, but not many. But perhaps I am unhappy.)
I have had few problems with my car. (My car has had almost no problems. I am happy.)
Few means only a small number.
A few means some.
Few men know the meaning of respect
There once was a man from Japan who had a pan in his hand
Quite a few people got the answer correct
Very few people are coming tonight because Real Madrid is playing Barca..... Of course Barca is going to win :)