

火曜日にピアノを習っています。
次の火曜日は空いてる?
火曜日は授業がありません。
"かようび(火曜日)" is in the lesson "Months and days" (Level 7), along with 18 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.