Koichi is like a gold mine of information, isn't he?
Tofugu employees are all very thirsty for knowledge.
Do you want to acquire a good knowledge of Japanese? Don’t be afraid. It’s easy. You just need to learn how to express information in another language.
You're discerning about what you know. You choose what to keep and what not to keep in your brain. This is the sum of your knowledge.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.