French language Q&A Forum

My question is about a quiz question in this unit: "J'ai décidé d'apprendre à jouer du piano cette année." How do you know it's "apprendre *à* jouer" instead of "apprendre *de* jouer," for example. I think that French verbs differ in this respect, but I haven't seen any systematic explanation of it, and I don't even know how to talk about it in a way that could make internet search productive. Do you have any teaching materials about this, or can you help me to understand it better? Thanks in advance.

Please help me with the answers and appropriate reasons

Thanks

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Why does one use allons gagner instead of gagnerons (future tense)?  What determines which is better?

The two words are the same to me, would someone explain their difference? 

Tu ________ beaucoup de cartes d’anniversaire.

Hey guys, 
I know the correct answer is as eu ,but why not avais ?!
Isn't the sentence like describing something in the past as L'Imparfait?!

Is this a typo. Is "après-midi" not masculine ?

Hey! Can someone explain to me as to why we include the "à" after "pas" in this sentence? Thanks.

Nous ne nous attendions pas à une telle déception!

I have read your answer to Liz and it still is not clear concerning “why is using dans le to indicate being in an actual dance class wrong?”

According to the notes: “dans + article + noun is used to refer to an actual physical place.”

A “dance” class is not specific enough??