Course Overview
This course is designed for anyone who works with messy Excel files and wants to transform them into clean, professional, analysis-ready datasets. Inside companies, one of the biggest problems is not building reports themselves, but dealing with raw data full of errors, duplicates, inconsistent formats, blank cells, and messy text that make reports inaccurate and difficult to trust.
In this course, you will learn how to think professionally when working with raw data, how to identify issues before they affect dashboards and business decisions, and how to prepare data the right way before using it in Pivot Tables, Power BI, or any advanced reporting tool.
You will learn how to remove duplicates, clean text, fix extra spaces, standardize names and dates, split and combine text fields, and use essential tools like TRIM, CLEAN, SUBSTITUTE, Text to Columns, Remove Duplicates, and Data Validation.
The goal is not only to clean data but also to make it analysis-ready. You will learn how to build a complete data-cleaning workflow and checklist that can save hours of manual work and improve the quality of your reports.
The course is fully practical and based on real business scenarios and real company files. By the end of the course, you will start looking at messy data differently and know exactly how to turn it into structured, reliable, business-ready information.
In this course, you will learn how to think professionally when working with raw data, how to identify issues before they affect dashboards and business decisions, and how to prepare data the right way before using it in Pivot Tables, Power BI, or any advanced reporting tool.
You will learn how to remove duplicates, clean text, fix extra spaces, standardize names and dates, split and combine text fields, and use essential tools like TRIM, CLEAN, SUBSTITUTE, Text to Columns, Remove Duplicates, and Data Validation.
The goal is not only to clean data but also to make it analysis-ready. You will learn how to build a complete data-cleaning workflow and checklist that can save hours of manual work and improve the quality of your reports.
The course is fully practical and based on real business scenarios and real company files. By the end of the course, you will start looking at messy data differently and know exactly how to turn it into structured, reliable, business-ready information.
What You'll Learn
Clean duplicate records
Remove spaces and common errors
Use TRIM, CLEAN, and SUBSTITUTE
Use Text to Columns
Standardize data formatting
Use Remove Duplicates and Data Validation
Prepare data before Pivot Tables and Power BI
Build analysis-ready datasets
Course Content
8 Sections
32 Lessons
2h 20m Total Duration
Understanding Real Data Problems Inside Companies
Why Company Data Is Usually Messy
3m
The Most Common Data Problems That Ruin Analysis
3m
How Bad Data Impacts Reports and Decisions
3m
Understanding Different Data Types
3m
Cleaning Text and Extra Spaces
Removing Extra Spaces with TRIM
4m
Cleaning Hidden Characters with CLEAN
4m
Replacing Text with SUBSTITUTE
4m
Using UPPER, LOWER, and PROPER
4m
Standardizing Data and Formats
Standardizing Numbers and Date Formats
4m
Converting Text to Numbers and Vice Versa
4m
Standardizing Customer and Employee Names
4m
Formatting Tables for Analysis
4m
Splitting and Combining Text Data
Splitting Data with Text to Columns
5m
Extracting Text with LEFT, RIGHT, and MID
5m
Combining Text with CONCAT and TEXTJOIN
5m
Preparing Full Names and Email Addresses
5m
Removing Duplicates and Errors
Removing Duplicate Rows with Remove Duplicates
5m
Finding Duplicate Values with Conditional Formatting
5m
Handling Blank and Missing Cells
5m
Handling Errors Like #N/A and #VALUE
5m
Using Data Validation Professionally
Preventing Errors with Data Validation
4m
Creating Professional Drop-Down Lists
4m
Setting Allowed Input Limits
4m
Showing Custom Warning Messages
4m
Preparing Data for Analysis
Turning Raw Data into a Clean Table
5m
Preparing Data Before Pivot Tables
5m
Preparing Data Before Power BI
5m
Creating a Data Cleaning Checklist
5m
Final Cleaning Project
Cleaning a Sales File Full of Errors
5m
Cleaning Employee and Customer Data
5m
Standardizing Formats and Connecting Data
5m
Final Project Walkthrough
5m
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Who This Is For
Employees working with messy files
Data analysts
Reporting staff
Business owners
Anyone dealing with raw Excel data
Your Instructor
Ashraf Elsheikh
Founder & CEO of Elite Training & Consulting
5 Courses
125 Learners
4.9 Rating
Ashraf Elsheikh is the Founder & CEO of Elite Training & Consulting with more than 20 years of experience in training employees inside companies on Excel, Data Analysis, Power BI, Power Query, and AI. Over the years, he has helped professionals improve the way they think about reports, dashboards, business workflows, and decision-making using data.
View Instructor ProfileFrequently Asked Questions
Is this course suitable if my data is messy and unorganized?
Yes, this course is designed specifically for people who work with messy files full of errors, duplicates, and dirty data.
Will I learn how to clean data before Power BI?
Yes, the course covers preparing data before using it in Pivot Tables and Power BI.
Will I learn Remove Duplicates and Text to Columns?
Yes, you will learn Remove Duplicates, Text to Columns, Data Validation, and other important cleaning tools.
Is the course practical?
The course is fully practical and based on real business datasets.
Will I receive a certificate?
Yes, you will receive a certificate after completing all required lessons.
Can I watch the course more than once?
Yes, you get lifetime access and can watch the lessons anytime.
