I'm new to editing...

Yes. Rendering simply means that FCPX ouputs rendered video to play instead of the preview.

You might want to have look at some tutorials: http://www.izzyvideo.com/final-cut-pro-x-tutorial/

Just to add a heads-up to mishmumken's excellent advice and link, bear in mind that Izzy's tutorial – as good as it is – is using an earlier version of FCPX. So even though the editing techniques are still applicable, the UI and media organization has changed quite a bit. To supplement that part of the learning process, so a search and you'll find a lot of other free tutorials on the newest version.

Russ

Could i find a FCP editor in Munich? looking right away!:R