Excel Skills Guide: Formulas, Functions, and Spreadsheet Mastery 2026 June

Whether you're searching for vlookup excel techniques or wondering how to freeze a row, excel skills are among the most in-demand competencies in virtually every industry. From the luxury world of excellence playa mujeres resort hospitality training to the institute of creative excellence's digital programmes, professionals everywhere are expected to handle spreadsheets confidently. This guide covers the core techniques you need — clearly, practically, and without the fluff.

Excel is Microsoft's flagship spreadsheet application, used by over 1.1 billion people worldwide. It's the standard tool for data analysis, financial modelling, reporting, and automation across business, education, healthcare, and beyond. If you can't use Excel fluently, you're at a disadvantage in almost any office environment — and if you can, it's one of the fastest ways to demonstrate your value and improve your daily productivity.

This article walks through the most searched Excel topics: from VLOOKUP and merging cells to removing duplicates, creating drop-down lists, and freezing rows. Each section gives you practical steps, not just theory. You'll also find free practice tests throughout to help you test and reinforce what you're learning as you go. Let's get into it.

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VLOOKUP is one of the first functions most people learn — and for good reason. It lets you search for a value in one column and return a corresponding value from another column. The syntax is =VLOOKUP(lookup_value, table_array, col_index_num, range_lookup). It's used everywhere from reconciling sales data to matching employee IDs to their departments. Getting comfortable with vlookup excel syntax unlocks a huge range of practical applications.

Beyond VLOOKUP, functions like INDEX-MATCH, SUMIF, COUNTIF, and XLOOKUP (in newer versions) are worth investing time in. They each solve real problems — SUMIF totals values that meet a condition, COUNTIF counts them, and INDEX-MATCH is more flexible than VLOOKUP for complex lookups. The learning curve is real, but short. Most of these functions follow similar logic once you understand the pattern, and you'll find yourself applying them instinctively within days of practice.

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Back to spreadsheets: one of the most practically useful skills is learning to remove duplicates excel quickly. Duplicate rows cause errors in totals, create confusing reports, and make data unreliable. Excel's built-in Remove Duplicates tool (under the Data tab) does this in seconds. Select your range, click Remove Duplicates, choose which columns to check, and click OK. It's one of those features that saves hours the first time you use it.

Data cleaning — removing duplicates, fixing formatting, standardising entries — is actually where many Excel users spend most of their time. Raw data from any source (CRM exports, survey responses, financial systems) almost always needs work before it's useful. Building confidence in Excel's data tools turns a frustrating manual process into a fast, repeatable workflow. That shift from data cleaning being a chore to being a skill you own is genuinely satisfying and professionally valuable.

Knowing how to merge cells in excel and how to remove duplicates excel are two of the most Googled Excel skills — and both are simpler than people expect. Merging cells combines two or more adjacent cells into one, which is useful for headers and formatted reports. Select the cells, go to Home → Merge & Center, and choose your merge option. Note that merged cells can cause problems in sorted or filtered data, so use them for display purposes rather than data entry.

Remove Duplicates works on a similar principle of simplicity. Under the Data tab, select your range and click Remove Duplicates. Excel will ask which columns to check — if you want to remove rows that are identical across all columns, select all. If you only want to deduplicate based on one column (like email address), select only that column. The tool tells you how many duplicate values were removed and how many unique values remain.

These two skills — merging and deduplication — often come up together in interview-style Excel tests and practical assessments. Employers use Excel skills tests to filter candidates quickly, so being able to demonstrate these tasks accurately under mild time pressure is worth practising. The free quiz tiles throughout this article are a good way to check that you can answer these kinds of questions accurately before you're tested on them in a real setting.

Learning how to freeze a row in excel is one of those small things that makes a huge difference to your daily experience. When you're working with large datasets, scrolling down means you lose sight of your header row — and then you can't remember which column is which. Freeze the top row and it stays visible no matter how far you scroll. Go to View → how to freeze a row in excel → Freeze Top Row. That's it.

You can also freeze multiple rows or columns simultaneously using Freeze Panes. Click the cell below the rows and to the right of the columns you want to freeze, then select View → Freeze Panes → Freeze Panes again. This is useful when you need both a header row and a fixed identifier column visible at all times — common in financial models or large data tables with many fields.

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Knowing how to create a drop down list in excel is one of the most practical data entry skills you can have. Drop-down lists restrict input to a predefined set of options — useful for status fields, categories, regions, or any column where you want consistent values. Go to Data → Data Validation → Allow: List → enter your options (comma-separated) or reference a range of cells. The drop-down appears in the cell, keeping your data clean and consistent.

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Drop-down lists work especially well combined with COUNTIF or SUMIF formulas. Once your column has consistent values (because the drop-down prevents typos), you can instantly total sales by region, count responses by category, or filter results by status — all reliably. This is why how to create a drop down list in excel consistently ranks as one of the most searched Excel topics: it's a multiplier skill that makes everything else in your spreadsheet work more smoothly.

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To remove duplicates in Excel effectively, first make sure your data has headers. Select the entire dataset (Ctrl+A or click and drag), then go to Data → Remove Duplicates. Excel highlights the columns you want to check — if you're deduplicating by email address only, uncheck all other columns. Click OK. The dialogue tells you how many duplicates were removed. Always save a backup before running this operation on important data — it can't be undone with a simple Ctrl+Z if you've already saved.

Advanced users often use formulas to identify duplicates before removing them — how to create a drop down list in excel and COUNTIF together make a powerful data audit tool. =COUNTIF(A:A, A2)>1 returns TRUE for any value in column A that appears more than once. You can then filter by TRUE to review duplicates before deleting, giving you control rather than a blind removal. This approach is especially useful when you need to decide which duplicate to keep rather than just removing all copies.

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Knowing how to find duplicates in excel is slightly different from removing them. Sometimes you want to see where duplicates exist without deleting anything — for auditing or review. Conditional formatting does this well: Home → Conditional Formatting → Highlight Cells Rules → Duplicate Values. Excel highlights every cell that has a duplicate anywhere in the selected range. This gives you an immediate visual of your data quality without making any permanent changes.

You can take the duplicate identification further with COUNTIF. Apply =COUNTIF($A$2:$A$100,A2) in a helper column — any value greater than 1 is a duplicate. This also tells you exactly how many times each value appears, which conditional formatting alone doesn't show. Both approaches have their uses: conditional formatting for quick visual checks, COUNTIF formulas for programmatic auditing that can be built into automated reports. Combining them makes your data quality work genuinely robust.

How to highlight duplicates in excel is something most users discover through conditional formatting — but there's a subtlety worth knowing. When you apply the built-in Duplicate Values rule, Excel highlights any cell whose value appears more than once anywhere in the selected range. That includes the original. So if 'London' appears three times, all three instances get highlighted — not just the extras. If you want to keep the first instance and only flag the duplicates, you'll need a COUNTIF formula in a helper column instead.

Delete duplicates in excel is a common follow-up to finding them. Once you've identified your duplicates — either visually or with COUNTIF — you can filter by the helper column (where COUNTIF > 1) and delete the visible rows. Or use the Data → Remove Duplicates tool for a faster one-step process. Either way, the key is to decide which record to keep before you delete. In most cases, you'll want the most recently updated record, but that depends entirely on your data and what it represents.

Excel's power really shows when you combine features: use data validation to control inputs, COUNTIF to audit quality, Remove Duplicates to clean data, and PivotTables to summarise results. Each tool is useful alone but genuinely transformative together. Building these habits into your regular workflow — rather than using them only when you're already in data trouble — is the difference between competent and confident Excel use.

An excel drop down list is one of the easiest ways to make a spreadsheet more user-friendly and data-consistent at the same time. Once you've set up a drop-down using Data Validation, anyone entering data into that column can only choose from your approved list. This eliminates typos, inconsistent capitalisation, and free-text variations that break your formulas downstream. It's especially powerful for shared files where multiple people are entering data.

Excel in vlookup is a phrase that often trips people up — it just means becoming proficient at VLOOKUP within Excel. The most common mistakes: using TRUE instead of FALSE for the range_lookup argument (which causes approximate matches you didn't want), referencing a table array that doesn't include the column you want to return, and forgetting to lock the table array with $ signs when copying the formula down. Avoiding these three errors makes VLOOKUP work correctly virtually every time.

The best way to build real excel in vlookup confidence is to practise on your own data. Take a dataset you actually use at work or study — a list of products, students, or transactions — and use VLOOKUP to join it with a second table. When the formula returns the right answer on real data you understand, the logic clicks in a way that practice examples never quite match. Use the free Excel quiz tests on this page to check your formula knowledge, and pair them with hands-on practice in actual Excel for the fastest skill development.