It's really important to build up your vocabulary in Japanese. You can't rely on words looking like English or working out links between the languages like you might do in French, Spanish or German.
Here is a link to a Memrise course that will teach you 125 useful words in Japanese:
http://www.memrise.com/course/55279/125-most-useful-japanese-words/
Here is another useful site with a selection of games
http://www.digitaldialects.com/
Here is a link to a Memrise course that will teach you 125 useful words in Japanese:
http://www.memrise.com/course/55279/125-most-useful-japanese-words/
Here is another useful site with a selection of games
http://www.digitaldialects.com/