I am offering something that was suggested to me at some point, and an opinion ... it is NOT recommended you try this, Without further understanding.
Once when I was looking to install a new distro, I asked what I should do about re-partitioning my drive, As I already had one distro on the entire hard drive ... Someone had suggested looking into Parted-Magic
, which is a tool that supposedly makes the whole process a little less intimidating. CLICK HERE
for their site. I never used it
as when I installed Zorin it did that part for me. But I did look at the site and read through some of the documentation and you may want to give it a peek, Maybe see if that is your sort of thing?
Here's the opinion part:
If I where you, and all my important stuff was on windows and I was just fiddling with Linux to see if I liked it ... I would back up all my important stuff to CD, DVD, whatever other media format I could ... and just install Linux fresh, and let it take up the whole drive.
Like I said ... Just a suggestion and an opinion, Probably better to wait for someone more tech savvy to come along, But maybe you can read up on partedmagic while you wait.