Where to Start?
You can go through HERE, Choose a category then Open a New topic.

Where to Place?
Basically, question starting with
who, your answer would be a person, it would go to PEOPLE category
what would go to ANIMAL, DATE-TIME, EVENT, THING category
where would go to PLACE
when would go to DATE-TIME
why would go to THING
how would go to EVENT
which would go to any of it
Mostly it depends on your Answer

How it Works?
Make a question, then use the:

Code:

[hide](answer)[/hide] tags

or

Spoiler:

you can just use the hidden command located at Others

Do people see your Answer?
People would see your answer if they replied with right or wrong answer. It stays hidden if they did not reply.