Step 1: Get the music you want (in MP3 format) onto your PC. If you've got the tracks on CDs, simply put the CD into your PC's drive, open Windows Media Player and follow the instructions to rip the files to to your hard drive. Alternatively download MP3 files (preferably legally) to your hard drive. Amazon has millions of tracks available.
Step 2: Plug your MP3 player into a USB port. Many models connect directly
http://tinyurl.com/35oh89b
Others might come with a USB cable.
Step 3: Go to 'My Computer' and you'll see your MP3 player as a new drive. Double-click its icon to show its contents.
Step 4: Go to 'My Music' (or wherever else you've stored your music files). Click-and-drag tracks, or folders containing tracks, across to your MP3 player's window.
Job done.
Chris