I need a dictionary :)

Hello All, I am new to bentoing & my exposure to Japanese culture has been limited. So as I read many of your posts I am left scratching my head thinking What the heck is that? I am picking things up slowly Like: Furikakie is a seaweed & sesame seed based seasoning for on rice Nori is Seaweed dried into thin sheets used for decoration and wrapping sushi Gyoza are steamed dumplings is there a book with stuff like this explained or a section here on the forum already & I missed it? Or do I just need to pipe up more often?