It occurred to me that I didn't actually answer the question.
The book is a bit under 400 pages. I'm pretty sure I read the whole book in under a week. You could do it in two weeks reading 30 pages a day.
The wall chart didn't take more than an hour to set up, but that's because I had income, expenses, and net worth already being tracked in Quicken. Depending on how many accounts you have and how organized you are, it could take a few hours the first time. If you keep it up with additional data points, you'll probably get faster at it over time. Nowadays I probably spend five minutes a month updating mine, which lives in Excel.