Solid State Hard drive

Hey guys,
I’m having a Sony laptop which having a solid state hard drive 120 GB.. In which, 60GB Operating system take and the rest of the space i can use.!!
As we all know that isn’t much space for our data.!!

Is there any concept behind of SSD that i can compress that hard drive and they give me much space for storing data..!!

or is there any tool through which i can do..??
Please help me guys.!!!