How to learn katakana
It made me
ハッピ 
"A bit more difficult than hiragana as they are more similar, but nothing that repetition didn't help with"
How I did it: Writing in the subway the alphabet, a i u e o, ka ki ku ke ko...
Transcribing random english words to katakana.
Reading katakana words.
Repeating repeating and repeating, that's the only trick I think, just make yourself used to write and read the symbols.
Lessons & tips: ツソシン
Remember those!
