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When entering numbers into a spreadsheet, one often needs to ensure that the number format is consistent. For example, if the numbers represent prices, you may want to display the appropriate currency symbol or you may simply want to ensure that the number of decimals displayed is always the same.

Unless you specify otherwise, all numbers in Excel are rendered in the “General” format. This means that numbers are displayed exactly as you enter them: if you enter two decimals, two decimals are displayed; if you went to one decimal, one decimal is displayed; and so on.

When specifying the number format, the best idea is usually to select the whole column. To do this, click on the letter or letters representing the column. (Any text contained in the selection will not be affected by the number format you specify.)

Number formats are specified in the “Numbers” group of the Home Tab of Excel’s Ribbon. There are three important formats which apply to numbers: the first is simply called “Number”, the second “Currency” and the third “Accounting”. To gain access to the complete range of number formats, click on “More Number Formats” in the “Numbers” drop-down menu. Another way of opening the “Numbers” dialog box is to click on the launch button in the “Numbers” group of the Home Tab of the Excel Ribbon.

When you click on each of the number formats, you are presented with a series of choices which enable you to refine the way that the format will work. For example, if our numbers refer to an hourly rate, we would probably click the “Number” category in the left column and then specify two decimal places. The option labelled “Use Thousands Separator” will insert the appropriate separator to demarcate thousands. The separator which Excel uses will depend on your locality: for example, if you are in the UK or USA, a comma will be used; if you are in a European country, a dot will be used.

The final option in the “Number” category controls the display of negative numbers. The default is to display a minus sign in front of the number and leave the colour of the number unchanged. However, you can also dispense with the minus sign and change the colour of negative numbers to red; or you can both change the colour of negative numbers to red and display the minus sign.

When we click the “Currency” category, we have pretty much the same choices with the addition of the currency symbol. We can specify which currency symbol is used or we can dispense with the symbol altogether.

The “Accounting” category is pretty much the same as “Currency”. Once again, you can choose a particular currency symbol. However, you will notice that you do not have any choices relating to negative numbers. The convention in accountancy circles is to always place negative numbers in brackets.

As an alternative to using the number dialog box, you can also click on one of the series of handy buttons which are used to apply each of the number formats with single click. There are also two buttons for decreasing and increasing the number of decimals displayed in the highlighted cells.

Finally, there will be times where you enter a number into a cell but do not want Excel to regard it as a number. For example, if you have a column of data with an ID of some sort, although the ID may be numeric, you may not want Excel to see it as a number or to change it in any way. You will probably want the ID to simply stay exactly as it was entered. In this scenario, it’s best to format the number as “Text”. The easiest way of doing this is to highlight the appropriate column and in the number dialog box select the “Text” category.

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Each Excel document is called a workbook and each workbook can contain up to 255 worksheets. To navigate to a particular worksheet, click on one of the tabs displayed at the bottom of your screen.

To the left of the tabs will find four navigation icons. These are very useful where you have a workbook that either contains lots of worksheets or has worksheets with very long names. The very first button makes the name of the first worksheet visible; the very last button makes the name of the last worksheet visible. The left pointing arrow button makes the name of the previous worksheet visible and of course the right pointing arrow button makes the name of the next worksheet visible. These four buttons don’t actually activate a worksheet; they simply make its tab visible. To activate a worksheet, you still have to click on that particular name tab.

Worksheets can also be activated from the keyboard. To activate the next worksheet to the right, hold down the Control key and press Page Down. This moves you forward through your worksheets are naturally holding the Control key and pressing Page Up moves you back to the left.

Once you have navigated to a particular worksheet, you will need to go to a particular cell or a particular section of that worksheet. Firstly, you can use the scrollbars to make different parts of the worksheet visible. Secondly, you can move around the worksheet using the arrows on your keyboard: down, right, up and left.

Excel also contains useful keyboard shortcuts for moving to the edges of a given body of data. To get to the right-most cell of the current range, hold down Control and press the right arrow and of course to get to the bottom cell, hold down Control and press the down arrow.

It is also possible to do exactly the same thing using the mouse. Position the cursor on one of the edges of the bold selection rectangle surrounding the active cell and then simply double-click. Double-clicking on the right hand edge of the selection rectangle activates the extreme right of the current range. Double-clicking on the bottom edge moves the cursor to the bottom edge of the range, and so on.

There are two final navigation key combinations which should be mentioned: Control-Home and Control-End. Hold down the Control key and press the End key to move to the bottom right of the current range. Hold down Control and press Home to move to the top left of the current range.

As well as navigating through worksheets, all users of Excel make frequent use of the Ribbon. Excel offers a series of useful keyboard shortcuts when working with the Ribbon.

To access the ribbon keyboard shortcuts simply press the Alt key once on your keyboard. A series of badges are then displayed which represent the letters or numbers that you should type to activate that part of the Ribbon. For example, “W” is the shortcut for accessing the View Tab.

When you press “W” and the View Tab becomes active, another series of badges is displayed on each of the commands within the View Tab. For example, the “Arrange All” command has “A” as its keyboard shortcut, so simply typing “A” is equivalent to clicking the Arrange All button.

Once you’ve typed a letter to execute a command, the Ribbon loses focus and the shortcut badges disappear. To access Ribbon commands via the keyboard once more, simply press the Alt Key and the badges will reappear. This means that you never have to worry about learning keyboard shortcuts. All you have to remember is to press the Alt key on your keyboard and Excel will prompt you from there.

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Upgrading to Excel 2007 may be something of a shock to you and your staff. The initial reaction of most people is: “where is everything?” Bearing this in mind, you may well find that a training course on Excel 2007 is a good investment. The training should first of all get you past the initial state of confusion caused by the fact that 2007 looks so different from previous versions. Then it should give you some guidance on the new features in Excel 2007 such as the enhancements to charting and graphics, functions and conditional formatting.

One of the first things you should look for in having training on Excel 2007 is a full explanation of how the new interface works. You should be shown the new way of working and learn useful tips and shortcuts which will enable you to become at least as productive in Excel 2007 as you were in 2003.

In addition to this, however, you will want to learn the new features that Excel 2007 has to offer: the stuff that either wasn’t available in previous versions or which has undergone considerable enhancement.

One fundamental new feature in Excel 2007 is the dimension of a worksheet which is now about 1000 times bigger (in terms of the number of cells) than previous versions. A good Excel 2007 training course should show you how to fully exploit the space available and how to quickly navigate and manage the larger worksheets that will result.

Pivot tables have been considerably improved in Excel 2007. However, given that so many users are a bit vague on getting the best out of pivot tables, why not ask that your training on pivot tables begins with a review of fundamental pivot table concepts before moving on to look at how Excel 2007 implements pivot table features.

Charts and graphics are a great way to add impact to your Excel reports. Does your organisation use them? If so, make sure that your Excel 2007 training course incorporates gives you plenty of practice examples in using Excel 2007’s new features to create and manipulate charts and graphics. You should become a dab hand at using the new charting ribbons: the format ribbon, the design ribbon and the layout ribbon. Do you need advanced features too? If so, you should also be looking to learn about pivot charts, scatter charts and adding trendlines to your charts.

Your Excel 2007 training course should also cover conditional formatting. This is a feature that has been much enhanced in Excel 2007 and your training should show you how to exploit the new features available. Make sure you will come away from the training knowing all about Data Bars and Color Scale.

An Excel spreadsheet without formulas and functions is not much use to anyone. Functions are what Excel is all about. Microsoft have improved the way in which function are entered and edited and added several new functions. When you book training on Excel 2007, make sure that your course will include coverage of new functions like SumIfs, IfError and AverageIf as well as a demonstration of the improvements to the editing of formulas.

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