かな Kana
Drill the kana with spaced repetition, and look them up in the charts below. The other drills are in the 練習 Practice menu; most are typed with a Japanese keyboard (set one up), but the kana drill is answered in English letters.
Drill
See a kana, type how it sounds. Cards you miss come back sooner, and a new row opens once you know the current ones.
Charts
Read the grid across: each row is one consonant with the five vowels. A red dot marks a kana you've learned in the drill.
Basic sounds
The 46 core characters, read across: a · i · u · e · o.
ん is the only consonant that stands alone.
Dakuten & handakuten
Two ticks (゛) voice a sound: か ka → が ga. A circle (゜) turns h into p: は → ぱ.
Combinations
An i-sound plus a small ゃ ゅ ょ merges into one beat: き + ゃ → きゃ kya.