There's a "Tips" thread in this Newbies forum. Here's the direct link. Read all of the various topics and responses.

Including this one:

BEFORE Internet: Windows 2000 & XP Need Protection

Next, since you mentioned Security, please click on the link below and read the various discussions in our Virus & Security Alerts forum. The direct link is below:

Next, go to the Google website and explore by running a search on almost anything.. Type in something like "Computer Tutorials" and see what you get..

If you're currently using Windows XP SP2, then you might want to visit the local computer store and buy Windows XP for Dummies". It's really not a bad book.

My advise...Nothing works as well as simply tinkering with the machine. The more you play with it, the more you will learn..

And most importantly, ask questions.. We'll try our best to answer them.

Hope this helps.