How can I relocate files to the C drive to free up space. Pictures, music, etc?

Easy, just select the files that you want to relocate and drag them over to the drive that you want them on. You'll want to have a window for both drives open. Now, keep in mind that if you have shortcuts on your desktop and the original file is stored on the C drive and you move it, your shortcuts will no longer work. Not a problem, just find the original file after you've relocated it, and create the shortcut again. Hope that helps.

C drive is 99% free space

thats alot of space, usually any computer bought from a manufacture has allot of free space to begin with that you'll never use.

Drive D is more than likely a recovery drive i wouldn't touch it.

definite, yet once you progression it you may might desire to erase it from the "C" force, and once you erase it by utilising stepping into the reycling bin, you may desire to "empty the recycling bin" by utilising mind-blowing clicking on the reycling bin icon on the laptop and finding out on the alternative