The benefit of an Excel training course is not just learning new things but also learning new ways to do old things. An experienced instructor provides hints and shortcuts that have you designing spreadsheets in new ways.
For example, let's look at tips from Excel training courses that can help in maintaining a database. Excel is an easy way to keep a simple database and a few design steps can save you huge headaches later.
Hide Blank Formulas
The simplest databases are a collection of data records but some have formulas off to the side providing analysis of each entry. However if any data is missing from the record then these formulas clutter up the sheet with "#NUM!" and "#DIV/0!" and other errors.
Consider a database of payments from a client, a typical example in an Excel training course. Each line contains, among other information, the date of invoice and the date of payment. You have a formula on each line that calculates the time between invoice and payment using a formula like "=G2-F2" to subtract the invoice date (F2) from the payment date (G2). Until you have a payment date, this field will read as a very large negative number.
Instead, enter this formula: =IF(G2="","",G2-F2). This says "If there is no payment date, leave this field blank otherwise calculate the payment delay". Even better, try "=IF(OR(F2="",G2=""),"",G2-F2) which leaves the payment time field blank if either date field is blank.
Mark Blank Formulas