How to change the RAM and Memory of my Philips...

Question

I own an X200 philips notebook (extendable neck). Normally you would just look at the back and there would be a specific area to unscrew and change the RAM or memory. But mine, the whole back is covered. although there are screws but, if you try and undo them it will expose the whole back and I'm just terrified to do it. I'm not a computer tech person. can someone help. Thanks