どんな・どうやって・どのぐらい
What kind of / how / about how muchmachine translation
Formationどんな + noun; どうやって・どのぐらい used inside questions
どんな + noun asks about qualities or type: どんな音楽 "what kind of music, what genre of music." どうやって asks about the method or means of doing something. どのぐらい asks about extent — time, distance, quantity, "about how much."
Like この・その・あの, the word どんな always needs a noun after it and never stands alone. Answers to どのぐらい usually use a quantity + ぐらい: 一時間ぐらいかかります.
Examples
どんな音楽が好きですか。
What kind of music do you like?
駅までどうやって行きますか。
How do you get to the station?
家から学校までどのぐらいかかりますか。
About how long does it take from home to school?