The first thing to understand about Quebec French is that it is not a deviation from Paris. It is a parallel line.
French settlers arrived in the seventeenth century, before the Revolution and the Académie finished standardising the French of Paris. What they brought was the French of their time, and when the British took Canada in 1763 the link to France was largely severed for two centuries. Quebec kept things France discarded, and then went on developing on its own.
So when a Québécois says moé and toé rather than moi and toi, that is not a corruption. It is closer to how the seventeenth-century French court pronounced those words than modern Parisian is.
The preserved forms
moé / toé: moi and toi, in the older pronunciation.
icitte: ici, here. An old form that survived the crossing.
frette: froid, cold, and specifically bitterly so. Regularly needed.
la job / la sandwich: several English borrowings that took the feminine in Quebec and the masculine in France, which is a small linguistic fossil of when each borrowed them.
The vocabulary that is genuinely different
un char: a car. France says une voiture. From chariot, and one of the most common words you will hear.
magasiner: to shop, as a verb. France says faire du shopping, which tells you something about who is protecting the language.
un dépanneur: the corner shop, the late-night convenience store. Literally something that gets you out of trouble. Universally shortened to le dep.
une tuque: a woollen hat. There is no French equivalent because there was no need for one.
une blonde: a girlfriend, regardless of hair colour. Un chum: a boyfriend, or depending on context a male friend, which occasionally causes confusion.
niaiser: to mess about, to wind someone up, to waste time. Enormously useful and entirely absent from French French.
pantoute: not at all, from pas en tout. Emphatic and very Québécois.
tanné: fed up. Je suis tanné covers a great deal of ground.
The anglicism paradox
The received idea outside Canada is that Quebec French is full of English. The reality is close to the opposite, in the words that get institutionalised.
France says le weekend, le shopping, un mail, le parking. Quebec says la fin de semaine, magasiner, un courriel, un stationnement. The Office québécois de la langue française has spent decades coining French replacements, and a striking number of them stuck, including courriel, which France has largely ignored.
Where Quebec does borrow heavily is in casual speech, and it borrows differently: not nouns for new things, but verbs and structures from everyday English contact. That is a real influence, and it is the opposite of the one people expect.
The sacres
This is the part that has no equivalent anywhere else in the French-speaking world.
Quebec swears with the church. The vocabulary is liturgical: tabarnak from tabernacle, calisse from calice, the chalice, ostie from hostie, the communion wafer, crisse from Christ, ciboire from the vessel that holds the wafers.
They can be stacked, conjugated and used as nouns, verbs and intensifiers, and a fluent speaker can build a long and grammatical sentence out of almost nothing else.
The history is not subtle. The Catholic Church held extraordinary authority over Quebec society until the Quiet Revolution of the 1960s, and the swearing is what a population does when the strongest available taboo is religious rather than sexual or scatological.
For a learner: recognise them, understand that they are genuinely strong rather than quaint, and do not decorate your French with them because you found them charming. The same rule as the Italian gestures in the gestures article.
The question forms
C'est-tu loin ?: is it far. The -tu here is not the pronoun; it is an interrogative particle, and it attaches to statements to turn them into questions. Tu viens-tu ? is entirely grammatical Québécois and completely opaque to a Parisian at first hearing.
What a learner should do
If you are going to Quebec, learn thirty words and the -tu question. The accent will take care of itself with exposure, and Québécois speakers are used to being asked to slow down.
If you are learning French elsewhere, learn to recognise it, because Quebec's cultural output travels: film, music and a great deal of writing.
And do not assume the two are interchangeable when it matters. The register differences are real, and they run alongside the ones in the French register article.
How to learn it
Save the Quebec word beside the French one. Char / voiture as a pair is worth more than either alone, because you will need to switch.
Give Translate the whole line. The -tu particle and the older vowels will defeat word lookup entirely.
Then let repetition do the thirty words. They recur constantly and are finished quickly.
The short version
Learn char, dep, magasiner, blonde, chum and niaiser. Learn that courriel is the real word for email in half the francophone world.
And leave the sacres to the people who inherited them.
Heard French in Montreal that Paris did not prepare you for? Put the line into Vokabulo. Free to start on iPhone, iPad and in the browser. 🍁