How to Use NotebookLM for Podcast Guest Research: Prepare Better Interview Questions from Books, Articles, and Previous Appearances

Why Great Podcast Interviews Start with Deep Research

The difference between a forgettable podcast interview and one that goes viral is preparation. When a host asks the same questions the guest has answered 50 times — “Tell me about your book” or “What inspired you?” — the guest goes on autopilot and the listener gets nothing new.

When a host asks a question that references a specific passage in the guest’s book, connects two ideas from different chapters, or brings up a point the guest made in an obscure talk three years ago, something changes. The guest leans forward, engages differently, and says things they have never said before. The listener gets a unique conversation they cannot find anywhere else.

The problem: this level of preparation takes 4-8 hours per guest — reading their book, watching previous interviews, finding uncommon angles. For a weekly podcast, this is unsustainable.

NotebookLM compresses this preparation to 30-45 minutes. Upload the guest’s work, ask the right questions about it, and emerge with an interview plan that demonstrates deeper knowledge of the guest than most professional journalists achieve.

Step 1: Gather Guest Materials

The Research Stack

For each guest, collect as many of these as possible:

PRIMARY SOURCES (highest value):
- Their book(s) — PDF or Google Doc
- Their published articles or blog posts
- Their academic papers (if applicable)
- Their company's "About" or "Team" page bio

SECONDARY SOURCES (medium value):
- Transcripts of their best previous interviews
  (search YouTube for their name, find top interviews,
  use a transcript tool or the YouTube transcript feature)
- Their conference talk transcripts or slide decks
- Their newsletter archives

CONTEXT SOURCES (supporting value):
- Reviews of their book (to understand public reception)
- Articles that cite or reference their work
- Their X/Twitter thread highlights (copy significant threads)
- Their LinkedIn articles or posts

How to Get Transcripts of Previous Interviews

Method 1: YouTube transcripts
  - Find the interview on YouTube
  - Click the three dots (...) below the video
  - Select "Show transcript"
  - Copy the full transcript

Method 2: Podcast transcript services
  - Many podcast apps show transcripts (Apple Podcasts, Spotify)
  - Some podcast websites publish full transcripts

Method 3: AI transcription
  - Download the audio and run through Whisper or similar
  - Clean up obvious errors before uploading

Uploading 3-5 previous interview transcripts is the single highest-value preparation step. It tells NotebookLM what the guest has already said — so you can ask what they have NOT been asked.

Step 2: Build the Guest Notebook

Notebook Setup

Notebook: "Guest Prep — [Guest Name] — [Episode Date]"

Sources (example for an author guest):
1. Their latest book (PDF) — primary source
2. Previous book (if relevant) — for evolution of thinking
3. Transcript: Interview A (their most popular interview)
4. Transcript: Interview B (a more niche/technical interview)
5. Transcript: Interview C (their most recent interview)
6. 3-5 of their best articles or blog posts
7. Bio and background information

Source count: 8-12 sources typical
Total words: 100,000-300,000 (well within NotebookLM's capacity)

Initial Exploration

Before generating questions, understand the landscape:

"Based on everything in this notebook, give me a comprehensive
profile of [Guest Name]:

1. CORE THESIS: What is the central argument or idea they
   are known for? (one paragraph)
2. KEY TOPICS: What 5-7 topics do they discuss most frequently?
3. EVOLUTION: How has their thinking changed over time?
   Compare their earlier work to their most recent.
4. CONTRADICTIONS: Are there any points where they seem to
   contradict themselves or have changed position?
5. BLIND SPOTS: What topics related to their work do they
   rarely address?
6. PASSION POINTS: Based on the transcripts, which topics
   make them most animated or detailed in their responses?
7. PET PEEVES: What common questions or misconceptions seem
   to frustrate them?"

Step 3: Identify Unique Angles

The “Never Been Asked” Analysis

"Analyze the previous interview transcripts in this notebook.
List:

1. THE GREATEST HITS: Questions this guest gets asked in
   almost every interview (avoid these or approach differently)

2. THE DEEP CUTS: Topics from their book/articles that
   interviewers never ask about but seem important

3. THE CONNECTIONS: Ideas from different parts of their work
   that no interviewer has connected together

4. THE UPDATES: Things they said in earlier interviews that
   may have changed based on recent events or their newer work

5. THE PERSONAL: Professional experiences or stories they
   have mentioned briefly but never elaborated on

The best interview questions come from categories 2-5,
not category 1."

Finding the Tension

The most compelling interviews explore tensions in the guest’s ideas:

"Find intellectual tensions or unresolved questions in
[Guest Name]'s work:

1. Where do they acknowledge uncertainty or debate?
2. Where does their advice for one audience potentially
   conflict with advice for another?
3. Where has the world changed since they wrote their book,
   potentially challenging their thesis?
4. Where do critics have a legitimate point that the guest
   has not fully addressed?
5. Where does their professional position create a bias
   they may not recognize?

Frame these as respectful but probing interview questions —
not gotcha questions. The goal is depth, not confrontation."

Step 4: Generate Interview Questions

The Three-Tier Question Framework

"Generate 15 interview questions for [Guest Name] organized
into three tiers:

TIER 1 — OPENING (3 questions, minutes 0-10):
  Accessible questions that set the stage. The audience may
  not know this guest. These questions should:
  - Establish who the guest is and why they matter
  - Reference something specific from their work (not generic)
  - Be engaging enough that a new listener stays

TIER 2 — DEPTH (7 questions, minutes 10-35):
  Substantive questions that explore their ideas. These should:
  - Reference specific chapters, passages, or claims
  - Connect different parts of their work together
  - Explore topics they are NOT usually asked about
  - Include at least one 'tension' question (respectful challenge)
  - Build on each other in a logical narrative arc

TIER 3 — PERSONAL/FORWARD (5 questions, minutes 35-50):
  Questions about their journey, future thinking, and advice:
  - What has changed in their thinking since the book
  - What are they working on next
  - What do they know now that they wish they knew then
  - Personal story that illustrates a key point
  - What advice they have for the audience

For EACH question:
  - The question itself
  - WHY this question matters (what it reveals)
  - The source (which document informed this question)
  - 2 likely follow-up directions based on probable answers"

The “Quote-Back” Technique

The most impressive interview move: quoting the guest’s own words back to them.

"Find 5 specific quotes from [Guest Name]'s work that would
make excellent interview launching points:

For each quote:
1. The exact quote (with source and page/timestamp)
2. Why it is interesting or provocative
3. The question to ask: 'In your book, you wrote [quote].
   I found this fascinating because... Can you tell me more
   about what led you to that conclusion?'
4. What deeper discussion this could open up"

Step 5: Prepare Follow-Up Branches

Anticipating Responses

"For each of the top 7 interview questions, predict the
guest's likely response based on what they have said in
previous interviews, and prepare follow-ups:

Question: [question]
Likely response path A: [based on previous interviews]
  → Follow-up A1: [goes deeper on this direction]
  → Follow-up A2: [challenges or complicates this direction]

Likely response path B: [alternative direction]
  → Follow-up B1: [explores this path]
  → Follow-up B2: [connects to another topic]

SURPRISE RESPONSE: What if the guest says something unexpected?
  → Pivot question: [a versatile question that works in any direction]"

Step 6: Create the Pre-Interview Briefing

One-Page Briefing

"Create a one-page interview briefing I can review 10 minutes
before recording:

GUEST: [Name]
KNOWN FOR: [one sentence]
KEY STAT: [one impressive number or fact about them]

OPENING HOOK: [how I will introduce them to the audience]

TOP 5 QUESTIONS (in order):
1. [question] — GOAL: [what this reveals]
2. [question] — GOAL: [what this reveals]
3. [question] — GOAL: [what this reveals]
4. [question] — GOAL: [what this reveals]
5. [question] — GOAL: [what this reveals]

QUOTE TO USE: '[specific quote]' — from [source, page]

DO NOT ASK: [questions they are tired of answering]

IF TIME IS SHORT: Skip to question [number]
IF CONVERSATION IS FLOWING: Follow the energy, abandon the plan"

Audio Pre-Brief

"Generate an Audio Overview that serves as my interview prep
briefing for [Guest Name].

Cover in a conversational tone:
- Who they are and what they are known for
- The 3 most important ideas from their recent work
- What makes them different from others in their field
- What no other interviewer has asked them (our unique angle)
- The 5 questions I should ask and why each matters
- One personal story from their background that could be a
  great conversation moment

I will listen to this while commuting to the studio."

Time Investment Comparison

Frequently Asked Questions

Will the guest know I used AI for preparation?

They will know you are extraordinarily well-prepared. Whether you disclose the tool is your choice. Most guests care about the quality of questions, not how you prepared them. The questions themselves are yours — NotebookLM helped you find the angles.

How many previous interviews should I upload?

3-5 transcripts is the sweet spot. Fewer than 3 does not give enough data to identify patterns. More than 7 adds diminishing returns and may slow down responses.

What if my guest has not written a book?

Upload whatever they have produced: articles, blog posts, talks, podcast appearances, social media threads. Even 5-10 substantial pieces of content give NotebookLM enough material for excellent interview prep.

Can I use this for video interviews and panels too?

Same process. For panels, create notebooks for each panelist and a separate notebook combining all panelists’ work to find connection points and disagreements between them.

How do I handle it if the conversation goes off-script?

The best interviews do. The preparation is not a script — it is a safety net. If the conversation is flowing naturally, follow the energy. Your preparation ensures that when the conversation hits a natural pause, you always have a strong next question ready.