Immersion. News in target language. Childrens TV in target language. Besides that, any resource. After a month or even two of immersion only and intent listening, begin studying for real. Nit 5 minutes a day but rather 30 minutes. You can reach basic fluency in 6 - 9 months, and then before your trip ensure you learn more specific grammar and vocab in topics you feel you need.
Immersion. News in target language. Childrens TV in target language. Besides that, any resource. After a month or even two of immersion only and intent listening, begin studying for real. Nit 5 minutes a day but rather 30 minutes. You can reach basic fluency in 6 - 9 months, and then before your trip ensure you learn more specific grammar and vocab in topics you feel you need.