Hi, now that I downloaded the iso CD&DVD Maker how do I use it to down load the rest of Linux to a stick

You need to be more specific. What distribution of Linux? Are you trying to put it on a CD, DVD, or USB? Are you wanting to install the distro on your computer or run it live off of the media?

I am trying to load Ubuntu but I hear you cant run two operating systems at the same time but heard if I put ubuntu on a stick I can boot it up from there and was told to download the program iso program first. I am not even sure if I am explaining myself right, I am not a computer expert by far but do know enough to kind of get myself to this point. Thanks for the help....

I think some clarifications are needed:
1. You can install more than one OS to a computer, this is called dual-booting (if you have 2 OSes) or multi-booting. You choose the OS you want to run at boot time and have to reboot the computer when you want to switch OSes.
2. It is possible to run two (or more) OSes simultaneously, this is called virtualizing. Usually you have a host OS (which in your case would be the existing Windows installation), two which you install a virtualization software, like Virtualbox. Virtualbox emulates a complete PC, on which you can install Linux (or any other supported OS). This way you can use Windows and Linux at the same time.
3. The software you downloaded is a CD/DVD burning software, it can't be used to put a Linux installation or live CD to a USB drive. To do this you need to use a software like Unetbootin.

Ok so I was feed some bad info earlier then by being told that I can't put both operating systems on my computer. So all I have to do is download visual box then download linux and I will be ok or is there something else I have to do. I really appreciate you helping me.

First make sure your system has the resources to support running two operating systems at once...namely RAM. If you're running Windows 7, I wouldn't attempt it unless you have at least 4GB of RAM.

Ihave an Acer that is about 3 years old, it is running Windows Vista, home edition, and only has 3GB of ram so should I just let it be. It was worth a try. I just got a chance to do some volunteer work at a college and they run the linux system and wanted to get a head start on it. I know windows pretty good. Is there a place I can see the system at work like test drive it. Again I appreciate all your help and your time.

creating a bootable USB stick is a good step for you to experience a different operating system. By doing it this way you will need to keep in mind that you are not running two OSes at the same time, you will be running the one in the USB stick and nothing more. For sure you will have access to the files storaged in your computers hard drive but you cant run any application installed in your hard drive.

Another thing you need to keep in mind and it is importand to understand that an OS running from a USB stick or CD or DVD it wont have the same speed as if you have it installed in the bare metal of your computer.

Also remember that most live session ISOs are not distributed with the full pack of codecs and other propietary software you would want to try, so if you are in a live session and you decide to check out a video in Youtube you will find out that you need to install Flash and flash plug in, or if you want to play some music you will need to install codecs for that live session.

With that in mind the program you need to create your bootable USB stick is called UNetbootin and you can find it at this link http://unetbootin.sourceforge.net/
Once you have that installed in your computer it will download the OS of your choice for you and it will install it in your USB.

That web site has the instructions on how to make it work

Good luck to you and if you have a multicore computer with more than 4 GB of RAM then give virtualBox a try https://www.virtualbox.org/

Remember to do some reading before you make a decition.

Another way to install Linux without messing with the configuration of your main OS is to use the Wubi installation feature of Ubuntu. It will install into a container of your Windows installation. You still have to reboot to change the OS you want to use, but you don't have to mess around with partitions and bootloaders. A Wubi installation will have a little impact on the performance of the Linux installation, but not as big as running it from USB or CD.