Very simple ways to learn any language you would love to learn, or being forced to learn it since you want your job in Japan :D:
1- Anyway, one of the most important things to have is a Pen and a Notebook which I, as a student, always forget about :D, I prefer a pencil to write notes, tips, concerns about how to speak, the way you pronounce the words and translate it into your language by your letters, it’s like comparing languages but for a speaking purpose.
2- It’s good to go to the country that where has the language started from and try to talk or have or be friends with a person who knows the local language as well as yours so it can be easier to communicate with other locals which I always prefer, or you can just buy a book of the language you want to learn back at your home and just sit on the sofa and read it which actually doesn’t help much because you would end up watching a movie which apparently you realized it’s your dream after suddenly waking up :D, plus you will feel down because you mostly don’t find anyone who is passionate or has the will to learn with you or test you on stuff, and most of these books just give you words and sentences, and they mostly don’t help you with the common words and sentences that are used between people.
If you still insist of learning the language you want at home, the internet is always there, watch videos on youtube, or connect your lap-top to your TV and watch some anime (which is most likely to be Japanese :D).
3- It’s better to have a voice recorder, pretty handy so you can listen and learn over and over again of how do people speak to each other, what are the common words they use, don’t worry about the accent if you are capable of learning so, it comes with time, but most grown ups don’t catch up on the accent because their tongues are used to speaking their own language with an accent that will mostly throw itself on the language they are trying to learn :D, or that the language is too difficult to learn such accent.
4- If you are alone in the foreign country, make sure that your mobile can view pictures on it, put pictures of the essentials of civilization, and by that I mean a picture of a fork, knife and spoon so you can ask a waiter/waitress for it in a restaurant by showing it to him/her, a toilet seat so you can ask where it is if you’re in a “I Must Do It Now” situation :D, a bus, train, airplane, cab (you have to check the color of the taxi of the country that’s being used in, it’s mostly different from a country to another).
5- It’s a must to have a good background of the country that you’re going to learn the language from, like I mentioned before about the cab’s color, plus, checking How does the traffic work there, On which side do people drive? Is it cold or hot there? When do they wake up? when do shops close? What is their currency? How much the currency is compared to the currency of the country you are from? What is the number of your embassy? Who to contact In Case of an Emergency (ICE), And if you are a morning person, When does the sun rise?. Those are Very Important information you should get before going to the country you would like to learn the language from, or even just touring there and having a good time :).
Feed me with your comments!. 🙂
MIDDLE SON
Tech And Other Stuff! 
Thank you. That is so informative and would be so very helpful for people of all races and nationalities. Living on the border of another country, Mexico it has taken me some time to learn the culture and the language of which I am still learning. For me the best way as you said is learning the language from the people themselves. Books and videos are helpful and internet all of which are tools. But living around and with the people of the particular culture is the number one way. But preparation before going to the country is very important and a priority. Daisy Osborn which was one of the greatest women of faith and one of my mentors..an apostle with worldwide crusades stated this…whatever country you desire to go to …start taking steps now by researching the culture , language , people, and everything you need to know about that place even if it could be years down the road. Awesome information and very well covered. God Bless you Middle Son…I will give you an A+ on that. Linda
Thank You very much for the comment Linda, and Yes, I agree 100% on all of what you said, having a background of the country before going is a must, plus it gives you another kind of depth of what are you going to go to, what kind of people are you going to meet, the culture, the morals, the priorities, there’s no better than talking to the locals and learning from them! 🙂
Great post MIDDLE SON! Having taught myself German, I could relate myself to all of those points. I learned through the internet, computer programs and a few books too. But what really helped me become fluent and master the actual accent when speaking it, was just going there to Germany. Within my first 2 months there I was already fluent in the basics (everyday type of things). Learning languages opens up so many doors of ideas and opportunities! -McKinly
Thank you for your comment McKinly!, I appreciate it.
Going to learn the language from it’s home is what I always prefer among all of those mentioned points, and Yes!, learning languages opens so many doors and avoiding a huge obstacle of communication with other foreigners. Learning a language in the present day is considered something special, because it’s beginning to get rare and it’s getting attention from all sorts of departments!, and most importantly, yourself!.
Thanks again for your comment! :).