"Back in 2005, I became obsessed with the art of tanking in EVE Online. Before writing the definitive tanking guide for EON issue 2 (for which the EVE community dubbed me "the tanking guy"), I spent a lot of time working out the mathematics behind the art. At a time when people preferred a trial and error approach to combat, I went as far as to create a spreadsheet to automate calculations on the strength of your tank. Over the years, more advanced tools like EFT (EVE Fitting Tool) have been released which have this functionality and more. In this short series of articles, I aim to cover tanking from start to finish in a concise and informative manner. In this first part, I begin with an introduction to tanking and follow up with a brief guide on how to select which type of tank to use and a complete overview of armour tanking."