openlayers 2 - How to edit Attributes on WFS Layer through Popup?

I am working on a project for university. So far I have displayed WfsLayers which can be select from a panel, also I can click on my points whereupon a Popup will show up with some information which is derived from my Geoserver which is connected to my Post GIS table. So far so good. I now would love to be able to edit my attributes in the popup box. I found this example (http://gis.ibbeck.de/ginfo/apps/OLExamples/OL26/examples/styles_unique_with_group_wfs.html), which looks just great and is exactly what I am looking for but being a coding newbie in general I have terrible difficulties understanding the code. I tried to use parts but just can't get it to work at all. Does someone have an easier example I could try to work with?