I feel like I have come to understand manual writing more deeply.

Just like the core of the lesson—to write briefly and remove unnecessary content—the lecture also delivers only the essentials concisely and without fluff. => 'Write briefly. Delete unnecessary content.' is the core of the lesson. The lecture also delivers only the essentials concisely.

I was able to learn good writing through the lecture.

Please explain it simply with examples, haha. Since there's a checklist, I think it'll be great to apply when writing! The part about <Writing a Terrible First Draft> was especially relatable and impressive~!!