added italian book Guida di angular 5 (#3404)

free-programming-books-it.md

@@ -7,6 +7,7 @@
   * [Sistemi](#sistemi)
   * [Storia dell'informatica](#storia-dellinformatica)
 * [Android](#android)
+* [Angular](#angular)
 * [Assembly Language](#assembly-language)
 * [BASH](#bash)
 * [C](#c)
@@ -74,6 +75,11 @@
 * [Guida Android](http://www.html.it/guide/guida-android/) (HTML)
 
 
+### Angular
+
+* [Guida di Angular 5](http://vbgraphic.altervista.org/warehouse/sites/default/files/downloads/Guida_Angular5_FabioGuerrazzi.pdf) - Fabio Guerrazzi (PDF)
+
+
 ### Assembly Language
 
 * [PC Assembly Language](http://drpaulcarter.com/pcasm/) - Paul A. Carter