theprof00 said: start with a, i, u, e, o (yes the vowel order is different in JP. etc. Learn to write them. Use flash cards to help. Also will probably take longer than a day. It is a huge amount of information to absorb through something that may be extremely foreign to how you've been brought up to think. Also; pronunciation is different as well. a i u e o |
I think it's easy to memorize them well within a day, but ofcourse you need to revisit these several times on different days in order to make sure it stays that way.
Btw, it must be extra tough for native english speakers, as everything is pronounced so differently. It's much easier on me, as most of the syllables are pronounced just like I would when I read them "in german".