I just downloaded Ubuntu, and I wanted to know what the best free partitioning software is? I don't want to have to completely get rid of everything, and then start over, I just wan't to create a partition from unused spae, maybe like a 10-20 gig partition, and dual boot effectively, also are there any tutorials on how to do this right?

Ubuntu has a text-based partitioner that's part of the installation process, and it's pretty good. Mepis and Knoppix have QTParted, which is graphical and also very good. My favorite one is Mandriva's DiskDrake, though. I don't use Mandriva, but I use DiskDrake from the first Mandriva installer CD. Some people swear by Partition Magic, but you have to shell out money for that.

I'll swear by Partition Magic for Windows partition moving and resizing. For Linux partitions I don't trust it. As soon as I installed FC2 onto the ext3 partition that PM made, PM started identifying those partitions (with the exception of SWAP) as being corrupted. Using linux apps, I find no problem with the partitions and have been using them effectively for over a year now. Just some bug I guess, but I won't trust it to resize the partitions if I ever get around to messing with the partitions again.

Just thought I should throw that out there as you will see alot of praise for Partition Magic (some of it from me).

fdisk.
It's free, it's on every distro, and it works - try here for a good tutorial.

Try a new version of free fdisk.Its not too difficult to use.