Sabrina you have mistaken your browsers for your ISP...the ISP is your internet service provider, this is whom you pay your internet bill to every month...I am going to leave a whole plythera of sites that have info on computer forensics...ie:cleaning, maintaining and diagnosing problems with internet and operating system...

computerhope
microsoft get started
microsoft.com
my web pages
kelly's korner
5 star support
optimizing pc
hardware secrets
diagnosis pc
microsoft/crawford

if there are specific things that you or anyone else needs help with please pm me anytime...I really want to help in anyway I can...