Study by topic
Work through the chapters for the licence you are preparing for and see feedback after each answer.
Practise with exam quizzes
Try timed questions, then review your result and the mistakes to revisit.
Learn from your mistakes
Return to questions you got wrong and check that you understand the rule before moving on.
The guides and app can support your preparation. For practical training and exam procedures, consult a driving school or the competent authority in Italy.