Can i download fl studio to my pen drive?

I have a 1GB pen drive here at work. I want to download the fl studio
demo onto my pen drive and take it home to use. Can this be done? I
havnt got internet at home im confused im in the middle of downoading
'flstudio_10.0.2_online.exe'. What does online mean? Its gonna take
more than an hour to download and its only 214MB.

There are so many versions of FL im not sure i need v10. Whats a good
earlier version? What would be the best site?

Sorry for rambling on. Thanks:)