Tips for better results

Random gets better from what you show it. These habits make the biggest difference in the first weeks.

Better drafts

Edit, do not rewrite. Change the draft Random wrote instead of starting over. After 15 substantial edits, it notes how you change its drafts and writes that way.
Set your voice. Under Settings → Assistant → Voice & language, choose the tone and the formality: Formal, Casual or Match the sender.
Add your working context. Under Settings → Profile → Working context, describe your work in a few lines. Random uses it when it sorts mail and drafts replies.
Keep personal mail private. Give a personal mailbox the Private role. Random sorts it for you to read, drafts only when you ask, and keeps it out of your brief, follow-ups and memory.

Teach Random Brain. In Chat, start with “Remember that ...” and add the fact. Correct or forget anything in Random Brain.
Use @. Type @ in Chat and pick a person, a company or a document, so Random knows exactly who or what you mean.

Close follow-ups. Mark a follow-up Done when it is handled, or Snooze it. The brief then shows only what is still open.
Choose your blocks. Add, remove and reorder the blocks on your brief so it opens with what you need. More in Daily brief.