Do you want to preserve the Windows partition and setup a dual boot arrangement?
In dual-boot settings, I will assign a small partition to /boot, another partition to Windows, a third to swap, and make the rest of the disk an extended partition. Within that I'll usually assign 10-40 GB to the filesystem root, /, then make the rest a single large partition that I mount as /home.
Something like this:
Sometimes I'll create another partition of 20-40 GB into which I can install new Linux versions for testing. That will use /boot and /home as well.
/dev/sda1 - /boot (512 MB)
/dev/sda2 - Windows (50-100 GB)
/dev/sda3 - swap (usually 2 X physical memory, say 4-8 GB)
/dev/sda4 - extended
logical partitions within the extended
/dev/sda5 - / (20-40 GB)
/dev/sda6 - /home (rest of disk)
If I only intend to have a single Linux installation and nothing else, then I'll usually just have three partitions for /, swap, and /home.