I would say it this way, I think it's correct... 日本語を習いたいです (Nihongo wo naraitai desu) I'm not sure how to explain pronunciation but I'll try A sounds like the one in father E sounds like the one in death I sounds like the one in is Both O and WO sounds like the O in pot The U in desu is silent you pronounce it dess The no silent U sounds like a double O like in book I hope that helps you

Hi. I am Japanese. What Mine wrote is totally correct :D

Watashiwa nihonggo kotoba wo benkiyo shitai desu.

I want to learn japanese can be said as " Nihongo wo narabitai desu ". Narabemasu - learn. Masu form + tai means want to do something Masu form of Narabemasu is Narabi i hope its useful for you