If I did not understand it well, I would look for a book about the subject. This could be a problem. Living in a country like Switzerland where mainly books are written in German, French and Italian, the english version may not be available. If it is, you then have to have someone that would understand the contents and explain them to you. Of course I could ask Mr. Swiss, but he knows so much in all languages, he tends to want to prove how much he knows and forgets that all I would need is a simple explanation.
Oh, the photo? Our town bookshop of course.