What program(s) are best for blocking anyone from tracking my presence on the internet?

I had the same concern so I started doing some research about it. It will take a ton of effort so most likely it won't happen, but it could.

The safest bet is to use an anonymous proxy (which is what you seem to be interested in). I'll link you to the one I use since it also has a pretty good FAQ section that could help you out. Like I said, I did a ton of research and I found this one to be the best, most complete one.

There is a program called "Hide IP" you can download which will block your IP address. Keep in mind though some websites will not let you on them bc they can't recognize you. Also it is pretty easy to find your ping address and locate you if you aren't a computer noob. Also there are other programs you can use to hide your ip address.

Not without tons of effort they wont. they can quite easily see your IP, loads of sites log all IPs and lots of stuff needs to know it so it can route your data back to you.

From your IP all most people can do is find out your ISP and where their center is.......mine shows up as being about 300 miles away from me

No I do not think so, as long as you have a good firewall and a good security suite installed on your computer.