I'm starting a new wordpress blog.
I want to write in Norwegian, but also have the option to write the same articles in English but do not know how I do this most efficient.
Is it possible to install a plugin that makes me do this?

I am a SEO consultant and have the following needs:

- No duplicate content.
- Different URL's on the different languages. ( example: domain.com/english/søkemotoroptimalisering/what-is-søkemotoroptimalisering.html and domain.com/norwegian/søkemotoroptimalisering/hva-er-søkemotoroptimalisering.html )
- Different category names.
- Different picture info (description and title tag)
- Different Meta Info

The blog will be monetized (Google Adsense ads)