According to your level of Japanese, you will gradually need to use professional Japanese references such as the 広辞苑 (Koujien) or the 大辞林. These dictionaries are available on paper, in electronic devices, and are also on the web. Recently, many web sites and electronic devices have come to provide the same service through different interfaces. This situation creates confusion rather than help for Japanese language learners and users.
I will try to guide you to find your future favorite tools as best I can.
