THANK YOU !
All the great investors who share their knowledge with us : Warren Buffett, Charlie Munger, Phil Fisher, John Bogle...,
All the authors of the books I mention in my bibliography,
Special HUGE thanks to Iko Borso for his incredible knowledge of Berkshire Hathaway, his wisdom, and, his day to day great and patient help for my numerous questions. :-)
Some great anonymous help comes also from :
Rich Rockwood (from Focusinvestor), Charles Wallman, Larry Oberman, ...
I must also add all the persons that share their opinion on the online BRK boards
And Finally, I apologize to all the persons that I did not mention but who were really helpful.
I thank you all :-)