If you plan to burn CDs, to download the CD images:
For x86-compatible (32-bit):
FC3-i386-disc1.iso (md5sum: db8c7254beeb4f6b891d1ed3f689b412)
FC3-i386-disc2.iso (md5sum: 2c11674cf429fe570445afd9d5ff564e)
FC3-i386-disc3.iso (md5sum: f88f6ab5947ca41f3cf31db04487279b)
FC3-i386-disc4.iso (md5sum: 6331c00aa3e8c088cc365eeb7ef230ea)
For x86_64 (64-bit AMD64, EM64T):
FC3-x86_64-disc1.iso (md5sum: b61b0eb7e0171837aeeff4f0054a4d79)
FC3-x86_64-disc2.iso (md5sum: 99dc12c7e8a93844a48a5675a9c07ec9)
FC3-x86_64-disc3.iso (md5sum: 399b7ffd721ebb4244a02c34cdbb1b82)
FC3-x86_64-disc4.iso (md5sum: f58b1de3b880df55dbbd37d143419226)