This is the 39th most frequent Italian word.
molto
"Molto" means "very," "much," "many," or "a lot" in English, depending on context.
Here, 'molto' is used as an adverb to intensify the adjective 'interessante', meaning 'very'.
Il film era molto interessante.
The movie was very interesting.
'Molti' functions as a pronoun modifying 'libri', indicating a large quantity, meaning 'many'.
Ci sono molti libri sul tavolo.
There are many books on the table.
'Molto' is used as an adverb modifying the verb 'vuole', adding intensity to the concept of affection, meaning 'very'.