How do i get rid of the Other space on my mac?

Have a look at how space is being used:
OmniDiskSweeper (free) - http://www.omnigroup.com/applications/omnidisksweeper/download/

OS X Lion: About Time Machine's "local snapshots" on portable Macs - http://support.apple.com/kb/HT4878 - “You may notice a difference in available space statistics between Disk Utility, Finder, and Get Info inspectors. This is expected and can be safely ignored. The Finder displays the available space on the disk without accounting for the local snapshots, because local snapshots will surrender their disk space if needed."

Hidden local backups with Mac OS X Lion filling up your MacBook hard disk! - http://blog.valerio.de/post/19238158977/hidden-local-backups-with-mac-os-x-lion- filling-up-your - Time Machine using local drive to store backups when external drive is not available.

To clarify, none of the "Other" category represents local snapshots.

You can't get rid of other.

The operating system and everything else that doesn't match the defined categories is in the "other" category.