Lost? Angry? (Please don't be angry ;_;) Find a chart that works for you: hiragana, katakana.
Correctly identified kana are available for review again after three hours; incorrect after one.
Come back every day until you feel like you recognise the squiggles well enough.
Each character is considered 100% learned after getting it right five times, removing it from reviews; mistakes dock a point.
This page works offline. You can save it locally, modify the numbers in its code, and just drop it into a browser.

---

After making any changes here, reload the page.
"reset" sets the success-count to 0, while "remove" sets it to max.

reset all - deletes all data for this character-set
remove all - marks all items complete for this character-set