Skip to main content

Posts

Pinned Post

Lesson 1.3 – Workbooks, Worksheets, Cells, and Ranges This lesson introduces the fundamental structural elements of Excel: workbooks, worksheets, cells, and ranges. Understanding these components is essential before working with data, formulas, or analysis tools. The concepts explained here form the foundation of all Excel operations. 1. Workbooks A workbook is the Excel file itself. Each workbook can contain one or more worksheets. Workbooks are used to organize related data within a single file. For example, a financial model, a budget, or a project plan is typically stored in one workbook with multiple worksheets. Examples of workbook names: Budget_2024.xlsx Sales_Report_Q1.xlsx Inventory_Tracking.xlsx Workbooks can be saved in different formats, such as .xlsx (standard), .xlsm (with macros), or .csv (comma-separated values). 2. Worksheets A worksheet is a single page inside a workbook. Worksheets are used to separate d...
Post a Comment
Continue reading
Recent posts

Lesson 1.2 – The Excel Interface: Ribbon, Tabs, Groups, and Formula Bar

Lesson 1.2 – The Excel Interface: Ribbon, Tabs, Groups, and Formula Bar This lesson provides a clear and structured explanation of the Excel interface. Understanding the interface is essential before entering data or using formulas. Each component of the interface has a specific purpose, and learning how these elements work will allow you to navigate Excel efficiently and perform tasks with accuracy. 1. Overview of the Excel Interface When you open Excel, the screen is divided into several functional areas. Each area is designed to help you perform specific actions such as formatting data, inserting formulas, creating charts, or managing files. The main components are: Title Bar Ribbon Tabs Groups Formula Bar Worksheet Area (Grid) Status Bar The following sections describe each component in detail. 2. Title Bar The Title Bar is located at the top of the Excel window. It displays the name of the current workbook (...
Post a Comment
Continue reading

Part II: Retrieving Data Chapter 3: Basic SELECT Queries

  Part II: Retrieving Data Chapter 3: Basic SELECT Queries Retrieving data is the core skill every SQL user must master. Whether you’re exploring a new dataset, debugging an application, or building reports, the SELECT statement is your primary tool. In this chapter, we’ll explore: The anatomy of a SELECT statement How to choose specific columns and rename them with aliases Filtering rows precisely with the WHERE clause Sorting results using ORDER BY Limiting output for faster testing with LIMIT and TOP By the end, you’ll have the confidence to write queries that fetch exactly the data you need—no more, no less. 1. Anatomy of the SELECT Statement Every SQL query starts with the SELECT clause, which defines what you want to see, and the FROM clause, which specifies where that data lives. A simple query looks like this: sql SELECT column1, column2 FROM table_name; Here’s the typical order of clauses in a SELECT statement: SELECT – List of columns or expressions to return. FRO...
Post a Comment
Continue reading

Lesson 1.1 – What Is Excel and Why It Matters Worldwide

Lesson 1.1 – What Is Excel and Why It Matters Worldwide This lesson introduces Microsoft Excel from a practical and professional perspective. The objective is to understand what Excel is, why it is used globally, and how it supports everyday work in business, finance, operations, and data analysis. The explanations are designed for learners with no prior experience. 1. What Excel Is Microsoft Excel is a spreadsheet application used to store, organize, calculate, and analyze data. It is part of the Microsoft 365 suite and is available on Windows, macOS, and the web. Excel is based on a grid structure composed of rows and columns, which allows users to work with numerical and textual information in a structured and scalable way. Excel is commonly used for: data entry and data organization mathematical and statistical calculations financial analysis and budgeting reporting and data visualization business planning and forecasting ...
Post a Comment
Continue reading

Excel Basic Course – International Beginner Guide

Excel Basic Course – International Beginner Guide Welcome to the Excel Basic International Course , a complete beginner-friendly learning path designed to help you master the world’s most widely used spreadsheet tool. Whether you are starting from zero or refreshing your skills, this course will guide you step by step through the essential features of Microsoft Excel. By the end of this course, you will be able to create spreadsheets, use formulas, analyze data, build tables, create charts, and work efficiently using shortcuts and best practices adopted in professional environments worldwide. Why This Course Matters Excel is a global standard in business, finance, data analysis, project management, and everyday productivity. This course follows international standards aligned with: ICDL / ECDL – Spreadsheets MOS Excel Associate Microsoft 365 Fundamentals Corporate Excel onboarding programs Each lesson is clear, structured, and practical, wit...
Post a Comment
Continue reading

Part II: Retrieving Data with SQL

 Retrieving data is the heart of SQL. In Part II of our beginner-friendly tutorial series, we’ll dive into the four essential techniques that let you extract, filter, summarize, and refine datasets: Basic SELECT Queries Advanced Filtering and Expressions Aggregation and Grouping Subqueries and Derived Tables Mastering these topics will empower you to answer real-world questions, from listing customer orders to calculating monthly sales trends. Basic SELECT Queries The SELECT statement is your gateway to any relational database. You’ll learn how to: Specify columns and use aliases ( SELECT first_name AS fname ) Retrieve all fields with SELECT * for quick previews Limit result sets ( LIMIT 10 , TOP 5 ) to speed up testing Sort data with ORDER BY (ascending/descending) Example: sql SELECT id, first_name, last_name FROM customers ORDER BY last_name ASC; This simple query fetches a clean, ordered list of customer names in seconds. Advanced Filtering and Expressions Once you can pull r...
Post a Comment
Continue reading