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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Good for those starting out.
Aparna S, Developer – II – Software Engineering
It’s a wonderful course for beginners to understand the basics and for experienced learners – a good one to refresh your knowledge.
Muthukumar Gopalakrishnan, Solutions Architect
The course was fantastic! I really enjoyed the hands-on projects and found the content to be highly informative. I had a great experience with the course. The instructor was knowledgeable and engaging. I would definitely recommend this course to my friends.
Jose Gaspar,
I will recommend this course to every beginner in the field.
Darlington Y. Faddams, Data Science Lead Trainer
I highly recommend (Lillian’s course). The course is exceptionally well-structured, featuring thorough and well-organized chapters. The lessons and hands-on training were extremely helpful and practical, and the pacing was excellent. The quizzes were cleverly crafted to challenge and reinforce learning effectively. This is a fantastic resource for building a strong foundation.
Anonymous,
It is an easy book dealing with interesting issues.
Jaroslaw Krzywanski
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
Thanks for such a wonderful and complete course. It really is the most complete course I have taken so far and very well explained.
Alfredo Lopez
Lillian Pierson can easily pack 8 semester’s worth of learning into a couple of weeks! She helped me learn that getting along in this world of masterminds and intellectuals is about sharing and transparency. This led me to delivering a talk at PyData ATL last week and sharing ideas through a blog. It’s well worth it! Former C+C client here.
Chris, Director @ Client AI/Ops
This book is clearly laid out and provides a great roadmap into how to succeed.
Data Diva
This moderator is excellent: Doesn’t go too fast, or too slow, explains each step and “why” clearly. I feel like I can use the skills learned here immediately to improve my work. Thank you!
Barbara Naydeck, MPH, BLN Analytic Consulting
Easy to understand.
Shannon K. Allen, VISN-19 Clinical Contact Center Nurse Manager
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
Very practical and methodical.
Vinod Kumar, Fintech Enabler/Transaction Banker/Digital Payments/Corporate Banking
I joined the program because I had no idea where to start. Within 6 months of joining, I had my brand setup with its first client, the Red Cross, and I’d booked several large speaking engagements.
Rahul Singh, Founder
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 was looking for a book that could introduce me to the field, get me used to the language and dip my toes in the water without drinking a whole pitcher-full of the electric kool-aid. Enter Lillian Pierson, and (this book). To me, the “for dummies” series always means informative, understandable, amusing excellence, and Lillian Pierson’s addition to their line met and exceeded those expectations. As soon as I started hearing Lillian’s voice, and understood how accessible the information was, I really enjoyed reading it, and now feel much more comfortable around the vocabulary and ideas than before I encountered the book. I can’t speak to the practical applications of the book, since that isn’t my thing, nor was it what I was looking to take from it. (This book) earns a solid five stars from me.
Samantha Alvarez
Sorts out the high-level topics and allows understanding to decide if you want to jump into this field.
Paula
I felt like you did a thorough job thinking about my specific situation and offering a customized presentation. You helped me clarify some blind spots and shift my perspective towards more actionable results-oriented solutions. You asked good questions, listened to understand, and reminded me what’s possible through encouragement. You also provided numerous practical resources to help me progress further.
Keenan Burke-Pitts, Senior Data Analyst @ Hubspot
I used the original book in 2017 to develop an understanding of the field, and being featured in it (bottom of page 345) is like coming full circle again. I definitely recommend this book if you’re a business leader wanting to learn more about the methodologies data scientists use!
HRJ
Very good for people who want to know what? Where? And how?
Hasham Mohammad
Very good course
vamsidhar pulapa, Senior Software development manager
Before I hired Lillian, I was really struggling with my marketing funnel and couldn’t convert visitors into paying customers. After just a few meetings and a full site audit, she gave me a detailed, step-by-step launch plan and walked me through exactly how to build a funnel that works. Since then, my entire marketing strategy has transformed. I stopped shooting in the dark and finally understood how to guide users from interest to conversion. By implementing the funnel and strategy Lillian crafted, I broke through my previous revenue ceiling and ultimately doubled my monthly revenue.
Morgan Gao, Founder, RemoteFront
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