Note the long pronunciation of the "o"s.
They result from yo/よ + u/う and to/と + u/う in this case.
As for today - thank you (or less literal: Thank you for today). kyou: today "ha" marks "kyou" as the topic you're talking about. Imagine someone did something big for you today. Just saying "thank you" may not make clear what you're thanking for, so adding "kyou ha" makes sense here. It points out that you're thanking for what happened throughout the day. "ha" (always spelled in Hiragana: は) is the "topic particle" and is always pronounced "wa". It's attached to a noun and identifies it as the topic of what you're talking about or as topic of the sentence. It's very important to keep in mind the entire "xxx ha..." is usually omitted, if the topic is clear from context.
Frequently asked questions
What is spaced repetition?
Spaced repetition is a study technique that schedules reviews right before you're likely to forget something. Cards you know well are shown less often; cards you struggle with come back sooner. It's the same underlying method Anki popularized, and the one Decks uses.
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Do I need an account to use Decks?
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Can I make my own flashcards, not just use the curated decks?
Yes — unlimited decks and cards on any subject, alongside the curated language decks.
What languages does Decks support?
Decks ships curated decks for Japanese, Chinese, Spanish, and French, covering everything from writing systems (hiragana, katakana) to grammar (HSK, Tae Kim's guide) to vocabulary and full sentences. You can also build decks for any other language or subject.