No.
its best to learn from someone that knows the language naturally
if you pay really close attention maybe you can but it is just a made up language by the creators of the game
they think sense they know how to talk in one language then why learn another
I don't think so. Its really hard to learn Assyrian Language.
All they really learn is the English language and a bit about you.
No, not really
You may learn some things about a language on the web, but it would be almost impossible to really learn a language.
If you want to learn another language you should learn it. If you learn another language it would allow you to communicate with those people who speak it so if there are people who speak another language near you learning there language would allow you to do business in that area and be there and talk to them. Knowing another language can be good for a job depending on a person position and if they would be doing international business or interacting in public relations.
You need to learn the other language, or find someone that knows the other language and ask them. Many names do not translate and on line translators often do not work with proper nouns.
How hard a language is to learn really depends on your motivation.
Buy a language program, take a college class, learn from someone who knows it, go to Norway.
You can learn to love someone by getting to really know them.