Persistence is omnipotent, if you overcome the obstacles you will succeed in the end. The quantity of success stories in this book proves this.
It is possible to start with very little and then, through great endeavour, build a successful business.
Unfortunately, I found the book rather boring. You will learn and take away a little from those businesses that are similar to yours (or perhaps what you intend or hope to do), but with 30 chapters covering 30 businesses it becomes a little samey.
There are wise words in the introduction and a fair summary of what you will learn from the book on pages 3-5; the author effectively puts his conclusions at the beginning of the book:
What can we learn from these businesses as a group?
The X Factor - no single X-factor, but a collection of traits which drive people to succeed.
Minimal personal reward initially - most are not able to, or choose not to, take much money from the business at first.
Do what it says on the tin - focus on one idea - normal for startups.
Keep It Simple (Stupid) - stick to your knitting - focus on the one idea - and, of course, your customers.
Work harder than you might think possible - startup entrepreneurs tend to put in a lot of hours.
Keep trying and believing - it takes time - persistence is omnipotent.
Who needs money? - most start with minimal funding.
Ambition - you need passion and commitment to become successful - a desire to earn loads of money will probably not engender sufficient drive for the long-term.
So what? - "they needed extraordinary levels of passion, energy, self belief and stamina, the ability and desire to focus, and a good measure of judgement."
After that, I don't think that the next 235 pages are worth the effort.