I am a designer. My education is in human-centred design, and my professional experience is in design education. These things, along with my work experience as a UX designer as well as a UX/UI curriculum architect, have given me some knowledge worth sharing. HCI is a lot to wrap your arms around. One book will not make you an expert; however, the professions that are the by-product of HCI skills are also growing and are more of a vocation than merely an occupation, and I hope you will continue on this path.
HCI is a vocation
A vocation is a job that is particularly worthy and rewarding to a person and typically requires great dedication and passion. I suppose my great dedication to the UX/UI practise has a part in me writing this book, but it also is why I come back to the HCI watering hole. Great dedication requires time, effort, and enthusiasm. Hopefully, you possess these factors. The time it will take you to consume this book will not make you a designer...