Step by step:
-How do I set up a News-site?
Assuming your news folder has the ID 5:
[!Ditto?parents=`5` (only docs in folder with ID 5)
This site should have the newest entry first
&sortBy=`createdon` &sortDir=`DESC` (sort by created date, direction descending. is standard setting, but for the sake of completeness)
and only showing 10 entries per page
&display=`10` (you can also use &summarize=`10`)
also need pagination
&paginate=`1`
-On my website there will appear Reviews for books, music, literature etc., this means I need a Reviews-Main-site but also listing the sub-categories on that page only. Automatically.
folder "Reviews" (e.g. ID 10), in that folder "books" (24), "music" (32) etc.
All Reviews:
[!Ditto?parents=`10` &depth=`3` (how many levels to search for docs)
E.G. Music:
[!Ditto?parents=`32` (only the music reviews)
Also the subcategory-pages should have 0-9 A B C etc. listing above and below the entries, only 10 per page and using pagination.
A-Z Listing: Seperate Snippet like
http://www.modxcms.com/A-to-Z-Listing-523.html