

コーヒーと紅茶、どちらがいいですか。
すみません、駅はどちらですか。
どちらでもいいですよ。
"どちら" is in the lesson "Adverbs 4" (Level 37), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.