You're better off doing excel books (only cost like $7) the online resources that you get (e.g: NotesEDU) are usually too much for yr 9 NAPLAN standards.
yeah, I think people find it relatively a 'big' exam as it was originally considered somehow for university applications. And also on the basis of changing schools, its pretty damn important
i had naplan last year for y9 and during the reading comp test i had a headache so near the end of the test i just started guessing all the qs couldnβt be fucked tbh