that chart could be useful if enlarged. Maybe have it copied and laminated to put on a wall.
I have some excellent Kana books where you learn to keep copying them to get the correct stroke order.
Many books are available via the NET.
White rabbit series is quite good also.
please do not give up KYOKOUK
It will be so well worth while you learning.
Japanese is your heritage-- that is priceless. GIve it a go.
Hiragana and Katakana Practice — Real Kana this is good site to practice learning the KANA.