Help! When do I use many and much? less and fewer?

Many is used for countable nouns. Much is used with uncountable things.  For example, "I have many friends and much time."

We also found that few and little  work in the same way. Few is used to quantify countable nouns, and little for uncountable. "I have few friends and little time."

The comparative and superlative forms for few are fewer, fewest. The forms for little are less, least.  So, the same rule as above applies -- fewer + countable; fewer items and less + uncountable; less money.

Which resources did you use to find the solution? Were the resources useful?