It's very useful and easy, now I'm satisfied about my lesson, Wow!
It => Pronoun
's (is) => Verb
very => Adverb
useful => Adjective
and => Conjonction
easy => Adjective
now => Adverb
I => Pronoun
'm (am) = Verb
satisfied => Adjective
about => Preposition
my => Pronoun
lesson => Noun
Wow => Interjection