I would like to know if there is any rule to know where prepositions should be placed in questions or clauses.
For example, I have heard many sentences and some of them put the preposition in the start and others in the end, but I don't know if there's any rule for this or any recommendation.
Where are you from?
Who are you talking to?
To whom are you talking?
He's the person I was speaking to.
He's the person to whom I was speaking.
This is the place from where you should start.