An Analyst by profession, this manual is beyond useful. It has greatly increased my knowledge from what I already knew. Full of tricks of the trade that is so easy to understand and learn. Well for me anyhow. To be fair, the knowledge contained therein would only be advantageous for those people who have some prior knowledge/experience of Excel.
How has it benefited me? For home: I've a much better understanding of my household budget, energy usage and billing, and mortgage projections. For work: developed new analytical tooling, development of new reporting constructs all to better Operations and Strategic development.
Knowledge is empowerment!