Is the material on the portal updated? How can I practice the latest questions?

The material on the portal is regularly updated & you can also practice the newly added questions directly. The filter screen by-default opens up the latest questions first. You can also do this manually by clicking on the icon (as shown below).

While you are practicing from the latest questions, there is still new material being added regularly and you can clearly differentiate them thru the ‘NEW’ tag visible on each newly added question.