Make me to understand - See the notes at Psalm 119:18.
So shall I talk of thy wondrous works - The things in thy works - thy providential dealings - that are wondrous. That is, with a heart full of the subject, he could not but speak of those things - for "out of the abundance of the heart the mouth speaketh." See the notes at Psalm 39:2-4.

Make me to understand the way of thy precepts,.... The meaning of them, to have a more comprehensive, clear, and distinct knowledge of them; and to be led into the way they direct unto, and walk therein;
so shall I talk of thy wondrous works; the works of creation, providence, redemption, and grace; with more knowledge and understanding, with more spirit and cheerfulness, with more readiness and liberty, more to his own satisfaction, and for the good of others: or, "meditate on thy wondrous works" (z); being in the ways of God, and freed from the distractions of the world and business of it.
(z) "meditabor", Pagninus, Montanus, Gejerus, Michaelis; "ut mediter", Junius & Tremellius, Cocceius.

Understand - More throughly.