I speak German and worked in German-speaking countries.
My advice is simple. Don't learn a language for business reasons. You won't get very far. Loving the country/culture/girls will serve as a much more long-term motivation. Language learning is done out of love, so remember to keep it from becoming "work". I only learned Japanese because the country was amazing and the girls gave me a boner. Now it's an integral part of my career but was never intended that way.
For the record though, learning German will open doors. Combine it with a marketable skill and you will be gold.
My advice is simple. Don't learn a language for business reasons. You won't get very far. Loving the country/culture/girls will serve as a much more long-term motivation. Language learning is done out of love, so remember to keep it from becoming "work". I only learned Japanese because the country was amazing and the girls gave me a boner. Now it's an integral part of my career but was never intended that way.
For the record though, learning German will open doors. Combine it with a marketable skill and you will be gold.
PM me for accommodation options in Bangkok.