Consultants
You spend your days on 30-tab files for clients who want clean deliverables.
You save 1 to 3 hours per mission on formulas, audits, and writing commentary.
Free pack
12 sheets of exercises to move from manual Excel to Claude-powered Excel. Fictional Tavolata universe, exercises with and without Claude side by side, answer key included.
You spend your days on 30-tab files for clients who want clean deliverables.
You save 1 to 3 hours per mission on formulas, audits, and writing commentary.
Monthly reporting takes 2 days. The board commentary takes another one.
BU recap in one prompt, commentary in 30 seconds. You stay in control to validate.
You know Excel but lose time on classic traps (VLOOKUP, SUMIFS, debugging).
You stop googling errors. Claude writes, explains, fixes inside your file.
12 tabs organized in 3 zones: reusable data tables, progressive exercises, real-world cases. Plus a preamble tab with exploration prompts and a cheatsheet of 25 prompts.
PREAMBLE
Claude prompts to explore any file before starting
5 DATA TABLES
Suppliers, invoices, dishes, team, P&L (Tavolata, fictional chain)
BASICS
SUM, AVERAGE, IF, COUNTIF, absolute references
LOOKUP
VLOOKUP, XLOOKUP, INDEX/MATCH, classic traps
AGGREGATION
SUMIFS, COUNTIFS, AVERAGEIFS multi-criteria
TEXT & DATES
MID, DATEDIF, quarter calculations, seniority
CONDITIONAL FORMATTING
Color scales, data bars, formula rules
PIVOT TABLE
Pivot table step by step on the P&L
DEBUG
5 broken formulas to fix, like a real file you'd receive
SUPPLIER CASE
Risk audit: concentration, duplicates, anomalies
P&L CASE
Pivot + commentary for the executive committee
CHEATSHEET
25 prompt templates, best practices, anti-patterns
No spam. Unsubscribe in 1 click.
Excel file + answer key version. You can also download directly from the next page.
Full video, 9 demos with commentary. The pack becomes your training ground.
The video is live on YouTube. The pack works standalone, but pack + video saves you 2 hours.
12 sheets, 9 exercises, 1 answer key. You get everything by email in 30 seconds.
Yes. No paywall, no upsell. You leave your email to get the pack and the monthly Umami newsletter. Unsubscribe in one click.
Not to do the exercises manually. For the 'with Claude' part, yes: Claude for Excel is an official Anthropic add-in, sidebar in Excel on Windows, Mac or the web. It needs a paid Claude plan (Pro, Max, Team or Enterprise). Install it from Microsoft AppSource: search 'Claude for Microsoft 365', click 'Get it now', then open Excel, activate the add-in and sign in with your Claude account.
The pack starts on basics (SUM, IF, COUNTIF) and goes up to business cases (supplier audit, P&L). If you know VLOOKUP, you're plenty comfortable for everything.
Yes. Formulas shown in the pack are in English (SUM, VLOOKUP, IF). Excel auto-translates to French when you type (SOMME, RECHERCHEV, SI). Claude adapts to your install's language.
The file opens in LibreOffice and Numbers, basic formulas work. For the Claude side, you need Excel or Google Sheets: since October 6, 2026, Claude also has a sidebar in Sheets (beta, paid plans). Nothing in LibreOffice or Numbers.
Yes, please do. The more it spreads, the better. The file is free to share, no password, no protection. The pack just mentions gaetanwittebolle.com in the header so your colleagues know where it came from.
Prefer to download directly without leaving your email? Download the pack now.