Critical care is a complex and technical specialty. As time goes by, every practitioner starts to find useful and common sense ways to deal with difficult and challenging situations. Many of these tips (how to do it) and caveats (how not to do it!) are passed on by word of mouth to colleagues, juniors and others. Most of them are not big enough to warrant publication in journals and so remain part of oral medical history, some surviving only within a single unit or institution. This small book aims to enable these tips to be shared amongst a much wider audience.