Cgi tutorial

Ah ok thanks I tried using a cgi script on my shared hosting and it blocked my account and the hosts done nothing to help me in any way. I think I will get stuck into the programming etc then purchase xojo then hosting.
Thanks very much for your help.
One other wee thing. I was watching Paul doing a webinar and when he was doing an apple phone app it came up with the phone image etc when he was designing it. How do you set that up. I am a windows 10 user.