Hi Danilo ,
Well, I'm not really an expert on PB, but I can get around it
One good source is this:
http://www.xs4all.nl/~bluez/datatalk/pure1.htm
And also check this:
http://www.purearea.net/pb/english/links.htm
And mind you, Pure Basic is nothing, not even close to Basic for TRS-80
It's a full structured language, wich resembles Basic in it's syntax, but it's as powerfull as C, because it has full structures, unions, you can work at the bits level, full inline assembly language support, and the full Win32 API callable from within the language
-kwag