Well the first thing u need to know is that it is a very easy subject 
u need to know the meaning and pronunciation of 
commen allez vous? 
how are you

je vais bien 
i am fine 

comment tu t'appelle?
what do you call yourself

je m'appelle (your name )
i call myself( your name)
then the conjugation of verbs etre (to be ) avoir(to have) aller( to go)

The most important thing you need to know is verbs and how to conjugate them 
for example 
the verb parler which means to speak will be conjugated as
je parle 
tu parles
il  parle 
nous parlons
vous parlez 
ils parlent 
this literally means 
i speak 
you speak
he speaks
we speak
you'll speak
they speak