Lex addresses the first chapter in the third section of Torrey’s book What the Bible Teaches, seen here.
Dwelling on the personhood of the third member of the Trinity may not be as common in some circles. Jesus and the Father get most of the attention.
But it is the indwelling Spirit that opens our minds, transforms our hearts, makes us see the things of the spirit that otherwise are invisible.
But really thinking of Him in terms of personhood seems to be a bit of a difficulty. But Torrey gathers a large amount of verses to show just what personality He possesses. This is a very good chapter to dwell on. See Lex’s discussion on her blog The Esther Project.