A list of terms and phrases to greet people and introduce oneself in French.

Les Salutations et se présenter

Hello

Bonjour for during the day.
Bonsoir after about 6pm or once it gets dark.

I am .... years old.

In French, to say what age we are, you have to use the verb 'avoir' (to have). 

J'ai
Tu as
Il/ elle/ on a
Nous avons
Vous avez
Ils/ elles ont

I am French/ American/ Chinese/ Italian/...

Don't forget to add the 'e' for people who use 'she/her' pronouns in English.

Je suis français(e)/ américain(e)/ chinois(e)/ italien(ne)/...

I live in Paris/ Nice/ Montpellier/ Lille/ Lyon/ Bordeaux...

J'habite à Paris/ Nice/ Montpellier/ Lille/ Lyon/ Bordeaux....

I live in France/ Denmark/ the Netherlands/...

Names of countries in French have genders, and their preposition changes depending on their gender. 

au : Masculin countries
en : Feminine countries
aux : plural countries

J'habite en France/ au Danemark/ aux Pays-Bas/...

I am a(n) teacher/ waiter/ salesperson/accoutnant/ student/ ...

In French, there is no need to say the indefinite article before the profession.

Je suis professeur(e)/ serveur(euse)/ vendeur(euse)/ comptable/ étudiant(e)/ ...

How are you? 

Vous = formal 
Tu = informal

Usual response to "ça va ?". It means "fine" or "good". It is a positive response.