In which cases "on November" and "in November" are used? What is a difference between them? Thank you in advance.

In which cases "over" is used?

Who or what is beautiful? Sally has a cat that is very beautiful. So who/what here is beautiful? Sally or cat? How do understand this sentence correct?

I want to practice or to practise English? So I see this often, maybe "to practice English" defines one meaning, and "to practise English" has other meaning that is not equal to the first meaning. Is it right?

In Internet or on Internet? Are these phrase the same? Or we must use "in Internet" than "on Internet" in speaking? Sometimes I can hear else the "on Internet" in speech. So are they right for English communication? Thanks in advance.

I am going to be learning English! What kind of Tense is here? As you can see that this sentence ( I am going to be learnING....) is so rare in spoken English. Please give me some examples, in which cases it will be used mostly? Thank you in advance.

What does mean "a one-stop guide"?

What is the difference between "at" and "on"? For example, I want describe something what I see at the wall or at the frame of a window. Look at the ornamental patterns what are ON the wall (the patterns are painted ON the wall). Is it right?

May I use 'set' instead of collection of something?