I disagree about needing to be tech savvy to use linux. There are differences and things to learn, but that is true of every new version of Windows too.
1. I suggest you get yourself a flash drive of 4 gigs or larger that you can dedicate for now.
2. Research a bit for linux distro's to try. Mint and Ubuntu are good options. Download your choice of "image".
3. Download a program that will install the "image" on the flash drive. Rufus and unetbootin are free and work well. They are tiny downloads.
4. Use rufus or unetbootin to install the image on the flash drive. (this will delete any data already there). You can't just copy it to the flash drive, it needs to be in a form the computer will understand to boot with.
5. You may need to do some research on how to start your computer using the flash drive rather than your hard drive. For many Dell's you press F12 as it's starting to get a menu where you can pick what drive to use.
6. When your computer starts you will be running a live version of linux! You can try the programs, surf the net (once you put in wireless info etc). You have the option to install in the menu or desktop but there's no obligation. If you don't like it, restart and go back to windows or download another distro to try. In a live version you can't install programs but once installed there are thousands of free programs you can try. You actually have to do some looking to find something that costs $.
Using an older or spare computer for practice is a good idea. If you choose to install you will wipe the hard drive so all data will be lost. Back up your files before doing computer work!