To express wanting to do something in Korean, you have to learn to change verbs a little but it's really easy.
As I'm sure you know by now, all verbs in Korean end in '다'.
The construction for saying you want to do something is 'V고 싶다' which, in a sentence, becomes 'V고 싶어요'.
The Korean verb for 'to go' is 가다. So if you want to say you want to go somewhere, how would we do it?
Take 가다, drop the 다 and add -고 싶어요.
The result? ...가고 싶어요 (I want to go).
To expand the sentence, what if you want to say 'I want to go again'. The Korean word for 'again' is 다시 so...
가고 싶어요. I want to go.
다시 가고 싶어요. I want to go again.
It's important to bear in mind that 다시 comes before the verb.
I told you it was easy!