Knowledge
Information, Understanding, Rules
noun
What does your heart want to acquire above all other things? Knowledge! That's why you're here isn't it? Dig deep and see that all your heart wants is more information and understanding of Japanese to be happy.
The readings for this word are both kun'yomi readings. You've learned both of these readings by now so you should be able to read this on your own.
日本語を勉強する際の心得のようなものはありますか？
Does there happen to be any sort of information on how to study Japanese?
「確か、カナエちゃんは多少フランス語の心得があったはずですよ。」と、マミが心得顔で言いました。
"If I remember correctly, Kanae-chan has some knowledge of French." said Mami, with a knowing look.
先輩が就職活動の心得を教えてくれました。
My senpai passed on his knowledge about job hunting.