Where
“He who dares nothing need hope for nothing.” – Unknown
If you can tell someone where something is, then you ought to be able to ask somewhere where something is. The usual ここ, そこ, and あそこ won’t always work for this. That’s why you have to learn the word どこ.
どこ ＝ Where
To start things off simply, you can just ask the question “where is it?”
aどこ ですか？
Where is it?
Maybe someone is telling you about a party. You want to know where it is. So, you could ask the question above, or… you could ask specifically where the party is, too.
aパティー は どこ ですか？
Where is the party?
aパティー は ここ ですよ。
The party is here!
And, of course, if you have no idea where you are (happens to me a lot… bad sense of direction), you can ask “Where am I?”
aここ は どこ ですか？
Where is here? (Where am I?)
aここ は フランス だよ！
This (here) is France.
a本当ですか？
Really / Is that true?
a本当だよ。
It’s true.
Let’s try these out a little bit more in depth.