先ずは

まずは

adverb

first of all, to begin with, before anything else(usually kana)(more emphatic than まず)

See also:まず

probably, most likely, almost certainly, virtually(usually kana)

more or less (satisfactory), on the whole, reasonably(usually kana)

anyway, at any rate, for now (at least), for the time being(usually kana)

先	before, ahead, previous, future, precedence