I have setup different albums according to different topic on my website (astrophotography and holiday/vacation photography). Both albums are using different skins.
I want to setup an entry page which allows me to show and access the different albums. Is the an easy way how I could do that without having to code html or so. I was thinking about a possibility to setup a new album which uses references to the existing ones.
Anybody having any idea or advice?

Many thanks in advance.

This is actually very easy to do, using web locations, so see RobM's link about how to do it.

Here's an extreme example. My skin demo page, at the top level, is an album made with the Neptune skin. It just points to eight separately-created albums, one for each of my skins.

https://jefftucker.jalbum.net/skins/

At the next level down, each page is made with the Jupiter skin, and this is, once again, just an "album of albums," in which each thumbnail points to a separately-created album:

https://jefftucker.jalbum.net/skins/saturn/

Only when you get to the bottom layer do you actually encounter normal albums, in this case, each made with the Saturn skin, like this one, demonstrating the use of folders in Saturn:

https://jefftucker.jalbum.net/skins/saturn/folders/index.html