4.78 average with 2 million paying customers, readers & learners

Data-mania reviews: hear it from your peers

Over 2 million people have used our services and digital products. Read their reviews to learn how marketing excellence changed their world.

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Working with Lillian was the best decision I made to fast-track my plans to create my personal brand and start my own business. A year after leaving the program, I have been steadily growing my subscribers and followers and launched my first paid offering a month ago. I’ve started to generate some income. Now I have a growing email list (600+) and approx 17k followers on social media combined. I strongly recommend working with Lillian.

Hana Khan, Host & Founder @ Disruptive Data Leadership

THIS IS THE REAL DEAL. I’VE WORKED WITH LILLIAN IN THE PAST. SHE IS AMAZING AND WANTS TO HELP OTHERS. STUDY WHAT SHE’S OFFERING. YOU’LL SEE THE INTRINSIC VALUE. SHE IS 100% COMMITTED TO YOUR SUCCESS. AGAIN LOOK AT THE WHOLE PROGRAM. IT’S A DEAL.

Tavo De Leon, Founder & Chief Analytics Translator @ Nerdy Analytics

Lillian is a pioneer and leading expert. As a highly-cited author, trainer and a consultant, Lillian is in a unique position to train from both a theoretical and a practical perspective. Feedback from past participants has been strong due to her ability to convey complex topics in a simple, understandable manner.

Ramy Hakim, Director @ PLUS Specialty Training

Good course to start from scratch

José Pellitero Pérez, LNG Cargo Operations Manager

Before completing this program, I already had my first paying clients coming in, and an online presence that was garnering me requests for job interviews.

Sinan Al Khatib, Founder

The content is good and clear for a beginner as it gives opportunities for further learning and deeper understanding.

willbroad otieno, Operations Analyst, Global

OMG!! I already got 2 new clients – good ones!! I love the systems we created!!! SSOOO much easier ♥ Thank you ♥ After just two 1-hour sessions, I had my systems in place for managing my business. In just 2 hours of work I’m bringing in more (& BETTER PAYING) clients!! Definitely recommended!

Daria Malykh, Founder

Great educational course for beginners, and a great reference for non-beginners!

Jonathan Belcher, Sr. Analyst, Enterprise Analytics Office

Lillian and Data-Mania provide immediate and effective results in all areas of growth and data-informed internet marketing. Lillian and Data-Mania offer a turn-key growth solution, from conception, to delivery and completion. I strongly recommend Lillian and Data-Mania to anyone who needs to ramp up their business growth through tactical strategies and/or social influencer services.

Rodrigo Flamenco, Founder

Thank you so much for this wonderful course, Lilian!

Diana Dent, Data Scientist

It is my first time to leave a comment on LinkedIn Learning. I quickly got interested in Lillian’s background and motivation. As someone thinking about my own career path, your opening statement has inspired me a lot to be courageous to pursue a better career. I will also encourage people from other fields to get some lessons learnt from her story.

Chao-Min Huang, CIM/APC Engineer

Great tutorial and instructor.

林彥宏, 區經理

Clear instructions that give you enough clues in each area to break the ice for further deep dives.

Farzaneh Rasti, Director-Optical MEMS

It has been a pleasure working with Lillian Pierson. During her time with us, Lillian brought strategy, structure, and a fresh American perspective to our growth efforts. She has demonstrated an understanding of digital marketing and lead generation, and has consistently been enthusiastic, well-prepared, and professional in her approach. Lillian’s work helped clarify key messaging, including USPS, AI content generation, and email strategies – all of which are critical elements for long-term growth.

Hatla Johnsen, CEO & Co-Founder (Elearning SaaS)

I met Lillian and found her very knowledgeable, friendly and eager to share her experience and expertise. This was evident in her presentation style where she had a tremendous amount of content to impart within an accelerated time frame. I found her very approachable. I thank Lillian for sharing her knowledge with me.

Rod Teo, Senior Manager @ EY Analytics (Asia-Pacific)

In 16 months, I doubled my salary. I grew a LinkedIn following from 300 to 18,000+ followers, and made 5-figures in consulting & product sales — 285x ROI in 16 months.

Nicholas Lowthorpe, Founder

Very practical and methodical.

Vinod Kumar, Fintech Enabler/Transaction Banker/Digital Payments/Corporate Banking

(This book) is surprisingly comprehensive – and not an easy read. But the first three chapters give an effective overview of the subject requiring little or no background. The writing is excellent, serious without being stuffy, but free of the sometimes excessive cornball humor other Dummies books have. The “part of tens” – often throwaway – is full of genuinely useful links to a variety of data visualization tools and resources. I learned a tremendous amount from this book and plan to keep it close at hand as my own job increasingly takes on (relevant) aspects and projects.

frankp93

I LANDED A DEAL WHERE I EARNED $750K FOR WORK THAT I WAS ABLE TO DELIVER IN LESS THAN 2 WEEKS… Working with Lillian felt like true advisory. She quickly unpacked the core issue behind a 45-item to-do list, helped me refine my vision and positioning, and gave me a quality-first path to attract the right niche. I finally embraced the business, got genuinely excited to build again, and could clearly see my growth trajectory.

Anonymous, Founder

Excellent introductory book! It provides an overview of the subject, without deviating from the initial training of technical skills. He helped me get started.

Carlos Eduardo Figueiredo Filho

In < 12-Months I achieved 6-figure revenue & booked out-2 months in advance for half the year. Name: Anonymous On my side, I got a lead out of the blue from someone who DM me looking for a technical writer in AI. They pay me as an independent and didn't try to lowball me. To me, it's new, especially as I only get 80 to 100 weekly search appearances. It makes me realize the importance of optimizing my LinkedIn profile for search.

MaryBeth Maskovas, Founder @ Insight Lime Analytics

(This book) is for those who need high quality information in a condensed but easy to digest approach. I’ve found this text to be the most widely approachable book and collection of content for those interested in getting started in the field and reviewing its most important tenets and ideas. While you won’t use this book to become a world expert, it will get you on the right track for your journey.

Eric D. Weber

I highly recommend this video. I particularly liked how the instructor went to the trouble to add an explanation for why a particular answer was incorrect when chosen during the quiz. That must have been tedious and I haven’t seen it in other videos.

Jack Youngblood, Retired

Thank You Lillian, this was a truly insightful course to set up a good base for an AI career. What I really liked about the course was the hands-on practice after each video, this is what really made the difference.

Omar Elasrigy, Core Banking & Enterprise Applications Specialist

I just got a call from another! Haha. I have about 4-5 clients. Moving forward I am doing packages with bundles of skills and features added. Getting new subscribers every day! Yay! I’ve definitely learned SO MUCH in this.

Pamela Kinga Gill, Founder

I will recommend this course to every beginner in the field.

Darlington Y. Faddams, Data Science Lead Trainer

Things are far far far better for me and it’s all down to you! From the bottom of my heart, thank you for being so awesome. You’ll see one day how much you have changed my life!

Veronica (Sasu) Cudjoe, Data Analyst

Content is great! Thanks for such a valuable learning experience!

Nevil Mehta, Data Analyst

As a newcomer, I found this course to be very helpful. The materials are not too difficult to understand because the instructor explains about it in a simple way and provides relevant examples to make the lessons even easier to follow.

Judika Pasaribu, English Second Language Teacher

This is a fairly high level introduction, which should be perfect for someone who is just starting out and wants to know the “what is what”. It unpacks the tidy presentation that you will find in this book.

I Teach Typing

ENTERPRISE-SCALE MARKETING EXPERTISE

FOCUSED ON EARLY-STAGE STARTUP GROWTH CHALLENGES

I built the demand gen systems that got me to 10% of Fortune 100 brands, 2M+ paid subscribers (Read our wall of ♥), $7+ MIL IN DIRECT REVENUE GENERATED, and 700K+ channel growth… Now I’m helping early-stage startups who need predictable pipeline without burning cash on paid ads.

$750k Revenue Generated
(First Year)

ENTERPRISE CONSULTING
CASE STUDY

10,000+ MQLs Organically
(Zero Paid)

SERIES F DATABASE CO.
CASE STUDY

200x User Growth
(in 90 Days)

VC-BACKED DATA SAAS
CASE STUDY

The AI-Native Growth Assessment

Free · 5 Minutes
Most startups are using AI. Very few are AI‑native.

Is Your Startup Falling Behind Its AI-Native Competitors?

Take the 5-minute assessment to see how your GTM engine stacks up, where you’re losing ground, and what to fix first. Get:
Your AI-Native Growth Score (0–100)
A benchmark against peer startups
The one constraint costing you the most leverage
A sprint-by-sprint 90-day AI-native growth build plan
SEE HOW YOU STACK UP
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By Lillian Pierson, P.E. · Trusted by Microsoft, Dell & Intel
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