Learn how to create useful spreadsheets. TL;DR: Through July 21, master the much-loved, much-hated Microsoft app with this Microsoft Excel training bundle. It's on sale for just £23.60 (reg. £314.14) ...

Excel possesses formidable database powers. Creating a relational database starts with a Master table that links it to subordinates, called (awkwardly) Slave, Child, or Detail tables. Before we dive ...

The following content is brought to you by Mashable partners. If you buy a product featured here, we may earn an affiliate commission or other compensation. TL;DR: Through July 21, master the ...

I consider myself an Excel poweruser. I program in it daily (20ish hours a week) and manage a few thousand lines of code for my personal use (stocks and finance). Outside of Excel, I know very little ...