Miles is the tutor built into your study guide. Open it with Ask Miles on the right of the reader toolbar. It lives inside the guide — that is where the book it answers from is.
The panel says what it is working from, right under the title: Answering from <your exam>.
It answers from your book
Miles answers from your exam's study guide, not from the open internet. That is the point: everything it tells you is something you can go and read, and the answers stay inside your exam's blueprint. Ask about something the guide does not cover and Miles says so plainly rather than guessing. Ask about the weather and it points you back at the book.
What an answer looks like
A tone label at the top — "Explanation: Fun & Memorable", or whichever tone you are on. See "The three teaching tones".
The explanation, with links in the sentences. A link's text is the name of the section it takes you to, and each section is linked once, on its first mention — not five times to the same page.
Formulas typeset properly, so an equation reads like an equation. See "Formulas and calculations in Miles's answers".
A References list at the bottom, numbering the sections the answer drew on.
Tap any of them and the guide underneath jumps to that passage.
Ways in
Ask Miles on the toolbar, for anything.
Select a passage in Annotate mode → Ask Miles about this, which hands Miles the exact text along with Explain this, Quiz me on this, Why is this on the exam? and Simplify it (ELI5).
Follow-up buttons under an answer — explain it another way, give me a mnemonic, quiz me on this. Each of those asks a new question and uses one of your daily questions.
Your conversations are kept
New chat starts a fresh one; Chats lists the ones you have had, each tagged with the exam it belongs to, including the ones from your trial. You can delete any of them.
Miles is a study aid, not an examiner and not an adviser. If an answer looks wrong, tell us — see "Reporting a wrong question or explanation".
