This book contains my personal experiences of undertaking a science PhD (laboratory-based) in a university institution. Although no experience is the same, this book aims to create a general understanding of what a science PhD actually entails, including what to expect in the dreaded viva. So whether you are thinking of doing a PhD yourself or are just curious about what it’s really like, this book is for you. The book has been split into different sections, each dealing with a different aspect of doing a PhD. I have tried to structure this book in such a way that it is not written in strict chronological order, whilst minimising the occurrence of overlap between sections as much as possible. In this way, each section should be able to be read individually if there is one specific aspect you particularly want to know about, meaning you may wish to skip straight to that part. However, I do discuss my PhD project section by section, and therefore to gain maximum enjoyment, I would recommend starting from the beginning. Additionally, if you are thinking of doing a PhD, you may also wish to seek other opinions, as each person will have a different experience of what it was like for them. In the meantime, read on for a very honest and open account of the studies that shaped almost four years of my life. I hope you enjoy and find it useful!