Elementary question about installation

Good morning, I have just now installed Arduino version 1.7. Till now all is OK but when I push the button help (in italian version "aiuto"), and I choose p.e. First steps, Arduino opens the block notes, and I see the document Html list, instead of its correct interpretation. What is my installation mistake?

Thanks a lot,

Gianni Orecchia

Arduino 1.7 is from Arduino.org. You should contact them for support. The latest version from Arduino.cc (here) is 1.6.3.

thanks for your suggestion.