This is quite a common questionI get and it's what is the difference between 'lots of' and 'a lot of'

It's very simple when we look at it. a lot of is, I guess, single because we use the article 'a'. Because of this we use 'There is' or "It is". We use it with uncountable nouns. For example:

  • There is a lot of information
  • There is a lot of coffee
  • There is a lot of water.

We can also use it with the plural of countable nouns and with There are. For example:

  • There is a lot of people
  • There is a lot of cars
  • There are a lot of people

Lots of is similar but we can not use this for uncountable nouns, we only use countable nouns. As an example:

  • There are lots of people
  • There are lots of cars

So they are very similar. In general conversation, informal English we can use both. In a more formal situation, we should follow the rules for countable nouns.