Regarding recording your screen:
There are lots of apps available, just not the same exact one. But most do the same job.
http://showmedo.com/videos/video?name=1820000& fromSeriesID=182
The app is called 'recordmydesktop'.
It's a different system, so it won't be exactly the same as windows. But it's not necessarily harder to accomplish things, just different. Switching to a Mac would be the same.
That's a decent tutorial explaining how to do it. (See the other videos there for some other good tips if you're new to GNU/Linux. They seem to focus almost exclusively for Ubuntu.)