Spanish language Q&A Forum

Does “Vámanos” fit in here?  I have heard it used but don’t really understand the reasoning behind it.  Is it another informal command for “Let’s go” to ourselves, like “Vamos”,  or is it from the verb “Irse”?                      Sorry, I know it is not part of this lesson you are teaching but I have been curious about it.  

Why is una gata? I thought this is male noun un or el gato.

What´s the difference between era y fue

What is the difference between usage of Cómo and Qué when one is trying to ask questions about 'How'? I have seen both Cómo and Qué used for How? 

Whats the best way to differentiate?

I thought Que tal?was an informal greeting.  Given as a correct form in your answers whe greeting an elderly man.

In the dictado exercise Carbón (A2) there is a sentence, I was very good, Yo fui buenísima that corrects to fuí with a tilde yet I can find no source that uses a tilde with fui. Is this an error? Also the word buenísima does not appear in my New World Spanish/English dictionary, if I Google buenísima it reverse translates to muy bien but this exchanges a adjective for a adverb. What's going on here?

Why is there an "s" when asking "Como te llamas?" but not for "Como se llama usted?" I understand that usted is formal, but why the change in llama(s)?