A few/few - A little/little

A few y few son usados con sustantivos contables en plural.

A little y little son usados con sustantivos incontables.

A few = no mucho pero suficiente
A little = no mucho pero suficiente

     We have a few hours before we need to be at the station, shall we go and 
     get something to eat.

     There is a little coffee left, would you like another cup?


Few = casi ninguno y puede ser usado con very para enfatizar
Little = casi ninguno y puede ser usado con very para enfatizar


     There were (very) few people left in the office, after five o'clock.

     There is (very) little milk left. I'll go and buy some.