Hello Geggen and welcome to the forum!
Make sure you have the record view visible. Store this view on one of the three preset buttons. If you want to do a recording, just hit the preset button, press the menu button and go down the the "start recording" tab. Press the left cursor button and the recording starts. To stop the recording just hit the menu button and go down to the "stop recording" tap.
Next press the left cursor button et voilá, you're done.
To review the recording, go to the recording view, press the menu button and use the down cursor to highlight the recording. Press the menu button and choose "start review" (or something like that).
TO review the recordings on your computer I recommend to download Hummviewer from Martin here:
http://humviewer.cm-johansen.dk/Hope this helps!
Best wishes / Harry
Hope this helps and good luck
Harry