waar kan ik handleiding downloaden

You can’t.   Adobe hasn’t made a manual specific to a version of PSE in years.    it’s extremely well documented on line.    You can always look for one online, the dummies series are pretty good.

Checkout, https://helpx.adobe.com/photoshop-elements/user-guide.html at Adobe.com however it isn’t downloadable.  Or a non-version specific manual can be downloaded at www.manualslib.com.