[anrakushi]

there is nothing wrong with learning the 'basic versions' first, but you should have stated when giving the list that it is not complete because a hell of a lot of sounds in the language were missing from there. no one is going to try and learn them ALL at once anyway, you do it in stages.

as for character differences i am wondering who taught you this? because you should know that both those styles can be typed on a computer as in the picture attached below. they are both correct in written form, in fact my written form i use your typed そ and your hand-written き. my japanese friends mix them up also.