Translation of vital

Yes, I speak a little bit of English. I'm just beginning to take English courses in private evening classes. Is your Spanish good? I will speak to you in Spanish and you teach me in English.
In plural there is no difference between the formal and the colloquial address form. Do you mean that you are using 3rd person singular form for the plural imperative? If so, I will change all entries so far.
I have not managed to contact you. And please write me only to the Vocabulix inbox and not directly to my other email addresses? When is the best time to reach you? For me anytime is good.