Ok i tried the code…
#2 did indeed change the font, but strangely just in the header of the articles pages, not in the homepage…any educated guess?
#3 It is still there with “comment are closed” written in italian
As for # 1 i doi not know how to insert a link to Anders page on the right side, as for the left side, the copiright part is ok, i would love to remove the powered by wordpress only

Thanks again @pixelverbieger