Turn to whom? Turn to the psalmist; turn to the teacher. Why? So that they can have a more perfect knowledge of what is right and what is wrong.
Why did the psalmist (as we just read in Psalm 119:79 and also in Psalm 34:11) want those who feared God to turn to him? Because he wanted those who did fear God to learn to fear Him even more! Wise living, godly living does not remove fear entirely, but consists of fearing the right things. Adam and Eve feared the wrong things.