Mama Would be Proud!
This Intermediate Tableau Course takes you beyond the basics with data cleansing, advanced filtering, date analysis, and mapping. Gain the skills to solve complex problems and stand out as an advanced user.
Clean and structure data – fix text, numerical, and date issues for reliable analysis
Apply advanced logic – use IF functions, filters, and calculations to solve complex problems
Build powerful visuals – create maps, trends, and dashboards that deliver real business insights
Fix Text, Numerical, and Date Issues for Reliable Analysis
Learning to clean and structure data is essential for accurate, reliable analysis.
You’ll discover how to transform messy information into a format that’s ready for powerful Tableau visualizations.
Use IF Functions, Filters, and Calculations to Solve Complex Problems
Learning to apply advanced logic gives you the power to automate rules
and solve complex problems.
You’ll discover how to use formulas, filters, and calculations
to bring deeper intelligence into your analysis.
Instantly reveal trends, growth, and contributions with powerful one-click calculations
Learning to use Quick Table Calculations helps you uncover insights fast without writing complex formulas.
You’ll discover how to calculate growth, trends, and percentages with just a few clicks.
Intermediate Introduction
05_01_What is Data Cleansing
05_02_Data Inspection - Gaps, Missing Data, Pivot Structures (Attachment)
05_03_Data Exploration with Tableau - Metric Comparison to Ensure Tableau Reads Correctly
05_04_File Storage and Project Tracking (MANDATORY)
05_05_Ooooopssss.....I forgot to explain the actual data set story - Customers Requesting Compensation
05_06_Managing Multiple Connections - Replace Data Source, Replace References (Attach)
QUIZ: The Importance of Cleaning Data in Tableau
QUIZ: Is Tableau Desktop a Data Cleansing Tool?
06_01_Data Splitting, Automatic, Custom, Underlying Formula Explaining, Split off a Split
06_02_Don't forget to save to Tableau Public
06_03_Replace Function
06_04_Left and Right Functions
06_05_Length Function + Bonus discussion on Discretes and Dimensions
06_06_Mid Function
06_07_Mid Function + Length Function
06_08_Find Function
06_09_Find + Left
06_10_Findnth, Contains, Swtartswith, Endswith
06_11_Trim + Lower + Upper
06_11a_Proper Function
06_12_LTrim and RTrim
Assignment - Numerical and Text-Based Cleansing (Problem) (Attachment)
Assignment - Numerical and Text-Based Cleansing (Solution) (Attachment)
07_01_Pivot vs Table Structure Theory - Physical Explanation of the Conversion
07_02_Extension Problem of Pivots - Be Careful with Aggregates
07_03_Setting up 2 Connections - Pivotted and Unpivotted
07_04_Pivot vs Table - What You Can and Can't Do
QUIZ: Difference Between a Standard Table and a Pivot Table in Tableau
08_01_Integers and Rounding
08_02_Ceiling,Floor, Absolute and Sign
08_03_Exponent, Power, Sin, Cos, Tan, Degrees, Radians, Logs, square root, square, pi
09_01_The Basics of Logic and IF Functions
09_02_Boolean Examples - =, , for String, Measures and dates
09_03_IF vs IIF Syntax and Writing your first Functions
09_04_Applying to Row or Aggregate Level
09_05_AND and OR Function Examples
09_06_Nested IF Functions
09_07_Else If Function
09_08_Case Function
09_09_Special Logic Functions zn, ifnull, not, , isnull
Assignment - IF Function (Problem) (Attachment)
Assignment - IF Function (Solution) (Attachment)
QUIZ: The Purpose of IF Functions in Tableau
“
AMAZING TEACHER
I love your course and could listen for hours. You distill valuable advice clearly. Found you on YouTube while struggling with LOD expressions; examples helped immensely. Grateful for accessible pricing and free content—your teaching is engaging and generous.
Emeline Courcelle
“
GAME-CHANGING COURSE FOR FIRST-TIME TABLEAU USERS
This course is a must for first-time Tableau users intimidated by data. Jed simplifies Tableau with step-by-step guidance: setup, import data, navigate the UI, and create visualizations. Clear, encouraging teaching—confidence transformed and ready to build. Thanks for making Tableau accessible.
Adam Lockwood
“EXCELLENT COURSE
Jellyman is an excellent teacher! His content is interesting, applicable and well-explained.
He has clearly thought about the way people absorb information and doesn't gloss over any assumed knowledge like many other courses do. He has taken the time to go through methods & concepts step by step so it's almost impossible not to learn!
”
Elizabeth Deterding
“AMAZING COURSE
The course is great! Feels like studying with a friend :) Everything is explained very easily and I am looking forward to the next one!
”
Anastasiia Larina
“BEST TABLEAU TRAINING EVER
Totally clear and very well explained with a bunch of examples. All sensible topics – LOD, Actions and Calculated Fields are tackled.
Big Thank You!
”
Nicolaie Cozma
“I LOVE LEARNING TABLEAU WITH JED
The best teacher of Tableau I have ever found! I would love to meet Jed someday in real life. I like his sense of humor and the way he explains everything.
Jed much thanx for this course.
”
Emilia B Korycka
“JOINS WERE HOLDING ME BACK
Great – this was holding me back but not any more
”
Brian Sundermeijer
“STILL LEARNING THINGS
I was wondering why we were just now covering joins when it's something I felt essential enough to be a beginner subject. Then you delved into joins versus relationships versus blends and it became much clearer – this was more complex than an entry level subject.
Great explanations all around and I have a better understanding of when to use which tool.
Update: Just finished LODs. Mind continues to be blown! Can't recommend this course enough.
”
Bryan Nylander
“ONE OF THE BEST EDUCATORS ON PLANET TABLEAU
Jellyman is a fantastic teacher! His lessons are unlike others to say the least!!!
Hats off to his engineering personality and his koool sense of humour (A bit of contradiction there but definitely works like magic on our memory capacity to retain his fun lessons :)
”
“AMAZING!
Take this course even if you think you're an expert in Tableau
”
Kamirah Martin
No you don't! I designed it with Tableau Public Free Edition in mind. For places where I demonstrate capabilities in the Paid Version, I simply showcase it. But you don't need to repeat to proceed.
Yes, it’s recommended. The intermediate course builds on the core foundations like basic charts, filters, and data connections, which are covered at the beginner level.
Calculated fields let you create custom metrics by writing formulas. This gives you more flexibility and control over your analysis compared to standard fields.
Parameters are dynamic inputs—single values the user can change—to drive user-controlled calculations, filters, bins, and even reference lines. They power what-if analysis and flexible Top-N or scenario dashboards without editing the underlying data.
The beginner course focuses on foundations like building simple charts and cleaning data. The intermediate course takes the next step with calculated fields, parameters, and multi-data source analysis.
This is where your journey begins here at Jellyman Education. You'll get a quick feel for what Tableau is and why it's such an amazing tool.
Now that you've made it through the "Getting Started with Tableau" course, it's time to get stuck into the real training! Here you'll learn a strong foundation of tools used throughout Tableau that prepares you perfectly for the future.
Now it's getting really good! Intermediate covers everything from Data Cleansing, Project Management, Data Structure, Quick Table Calc's, Advanced Filtering and Advanced Maps. You'll be the star of the show with these skills!
You're now delving into some of the highest and most complex operations you'll find in Tableau. LOD's, Joins, Unions, Big Data, Blending, Parameters, Sets, Advanced Dashboards and Custom Visualizations. WOW INDEED!!!!
Now it's getting really fun. Think of Tableau Cloud as the digital cafe where you and your friends meet up to share stories, information, dashboards, data, results and more. It's the future of Data Sharing in the Industry today.
With Visualizations through Tableau Desktop and data sharing through Tableau Online, it's time to tackle Advanced Data Cleansing using Tableau Prep. This is one of the most enjoyable tools you'll find especially if you clean data all day long!
Master the essentials of data analysis with SQL, ChatGPT, AI-powered SQL, and project management. Gain practical skills to solve real problems and boost your career as a data analyst.
Perfect for job seekers and freelancers—these Tableau projects help you build a standout portfolio on Tableau Public. Showcase your data skills, design thinking, and storytelling in real-world scenarios that make sharing and impressing easy.
Learn how to land your dream data analyst job with a proven system: avoid common mistakes, craft powerful applications, ace interviews and testing, and turn rejection into growth. Build confidence, skills, and a portfolio that gets you hired.
