Operating systems are the guts of the user interface with the hardware.
There are a few operation systems that cater for different people,
- Windows (business, personal) the main one at present
- Linux (business, personal) the one trying to get open source out there and make it a very interesting alternative to Windows
- Solaris (business)
- OpenSolaris (personal, business)
- Unix (business)
there are of course a few more out there but I would say that these are the main ones trying to gain your usage and I am interesting in all of them and shall demo installs, usage tips, development help and allot more things that are of interest.