This is the worst purchase I have ever made. A 41 page paperback with a font size so large, that you would end up with a two page A4 fact sheet if compressed to a normal fontsize. All this ‘valuable’ information can be plucked from the internet and I find it an insult that I had to pay $24.00 for this. I felt embarrased giving this as a present to my husband. Don't buy it!