In Microsoft Excel, a workbook is an Excel file that contains a collection of worksheets used to organize and manage data. When starting a new project, you create a new workbook, either from scratch, by using a pre-designed template, or by opening an existing workbook.
Components of Worksheet
When the Excel program is opened for the first time, the user sees three blank worksheets in the workbook. The screenshot below shows the first worksheet with three tabs at the bottom left corner named Sheet1, Sheet2, and Sheet3. If a workbook contains many worksheets, arrows will also make it easier to view the worksheet tabs.

It is not necessary to delete the two unused worksheets if you're only using one worksheet - most people don't bother. Newer versions of Excel save workbooks as xlsx files. Older versions xls extension.Â
Can we have more than one Excel worksheet in one workbook? According to Microsoft, it's limited by the number of memory slots on your computer. This is useful if you're linking data from one worksheet to another, and especially if you're grouping worksheets that are extremely closely related. However, using the worksheet tabs back and forth can become confusing.
View a Worksheet
To view a worksheet, click on a worksheet's tab to view it. Worksheet names and/or many worksheet tabs may not allow the workbook window to display all tabs, so use the arrows on the left of each tab to navigate left or right, or right-click on any arrow and select the worksheet to show from the list.

Rename a Worksheet
To rename a worksheet, follow the following steps:
Step 1: Right-click on the current tab you will get a list.Â

Step 2: Now in this list select Rename option and then typing a new name.Â

You can also rename the worksheet by double-clicking on the tab.
Insert a Worksheet
One of the fastest ways to insert a worksheet in a workbook is to click on the small tab to the right of the last worksheet tab. The worksheet can then be moved to a different position if necessary.

Alternative Method to insert a Worksheet - Right-click on the tab of the existing worksheet that is just to the right of where you want the new worksheet to be placed.

Copy a Worksheet
Now, imagine you have worksheet for 2024 website traffic data and you have to create a same sheet for 2025 but with different data. So, what will you do, just like others you will recreate a worksheet for 2025 but have you ever think that re-creating a same type of worksheet is time consuming. So, insted of rec-creating a same type of worksheet you can copy the entire worksheet and only change the numbers. To copy the worksheet follow the below steps:
- Step 1: Right click on the sheet tab of exsiting sheet
- Step 2: Now, you will see a list menu and from this list menu, select the Copy option.

- Step 3: After selecting Copy option a pop appears.
Delete a Worksheet
To delete a worksheet, follow the following steps:
Step 1: Right-click on the current tab(or the tab that your want to delete) you will get a list.Â

Step 2: Now in this list select the Delete option and your list will be deleted.
So this is how you can delete worksheets.Â
Example
Now, let's take a working example. Here, I am creating a lesson plan for c++ subject:

Now if I want to teach more than 1 subject then I need to include or insert one more worksheet and for inserting a new worksheet click on the small tab to the right of the last worksheet tab.

Now, if we want to rename that file then we can rename the spreadsheet tab by right-clicking it, selecting Rename option from the context menu, and then typing a new name. Here, I rename that sheet1 with 16MCSMAT.

Now, if I want to view the 16MCS22C2 worksheet then click on a worksheet's tab to view it.

Now, after some time I don't need the 16MCS22CLAB file. So, to delete that file and for deleting a file, select the Delete option from the context menu by right-clicking the worksheet tab.