Q. How can I limit how many nzb titles I get, filtered by the last X amount of days?

A. 
Select *
from nzb
where sysdate < 30
and count < 50
order by date;

Q. How can I filter the titles by category?

A.

Q. How can I download an nzb/zip?

A.

Q. How can I filter by asc/desc order?

A. 

Q. How can I use the List By filters?

A.