DOT3 brake fluid is the minimum standard they can legally sell right now, they have DOT4 too but that is overkill and recommended for ABS systems blah blah blah, its really all the same.
its sold anywhere that car fluids are sold, take your pick

yes its the exact same place on your h23a1

:edit:
you can see it in the rightmost picture on my signature, its the smaller yellow can shaped thing in the exteme upper right corner of the pic.
:edit:

~boomer