In many, but not all, situations, the comma goes before the word "or":
The banquet offered a choice of steak, chicken, or salmon.
Get out of there right now, or I'll tell the teacher.
In some situations, however, it is correct to have a comma after "or":
I am not a big fan of Baseball or, to be perfectly honest, most sports.
There is no word in English that necessarily requires a comma.
No, a comma does not go before the word 'in'.
Yes, you can use a comma before the word "but" when it connects two independent clauses. For example: "I wanted to go to the store, but it started raining."
No. After the word and comma can not be used, as it is grammatically inappropriate to use comma after conjunctions such as and, which are called coordinate conjunctions.
The comma goes after the word 'because' when it is used at the beginning of a dependent clause, separating the clause from the main clause. For example: "I stayed inside, because it was raining."
There is no word in English that necessarily requires a comma. Commas are features of the sentence. Sometimes a comma may go before if, for example when it introduces a new clause: We will wear rain-gear, if it becomes necessary. And sometimes a comma may go after if, for example in this sentence, when another thought is inserted into the structure. Generally there is no comma with if.
You can but do not have to.It is not wrong if you do.It is very rare to put a comma(This is what a comma looks like',')after a coordinating conjuntion.
NO
It is usually appropriate to place a comma before "but." One should not use a comma after "but."
Not necessarily. There is no word in English that requires a comma.
Not necessarily. There is no word in English that requires a comma before or after it.
A comma may go before or after, or not be there at all. The placement of commas is entirely a matter of sentence structure. There is no word in English that requires a comma.