What is the suggested methodology for studying the science of Usul al-Fiqh according to the Hanbali school and the scholars of the Kingdom (Ibn Baz and Ibn Uthaymin), progressing from beginners to advanced levels, along with mentioning the best commentaries on the core texts and recommended books for each level?

The most famous books on Usul al-Fiqh among the Hanbalis are three: "Rawdat al-Nadhir" by Ibn Qudamah, "Mukhtasar al-Rawdah" by al-Tufi, and "al-Tahrir" by al-Mardawi. Scholars have praised these books and their commentaries, such as Ibn Badran, who described "al-Rawdah" as the most beneficial book on Usul for the Hanbalis, and al-Tufi, who said of his abridgement that it is the best work compiled in the field. "Al-Tahrir" was chosen for its comprehensive collection of the field's rulings and principles. Contemporary scholars, such as Ibn Baz and Ibn Uthaymeen, recommend these books along with "al-Waraqat" by al-Juwayni. For studying Usul, it is suggested to begin with "al-Usul min Ilm al-Usul" and "al-Waraqat", then "Mukhtasar al-Rawdah" and its commentary, followed by "Sharh al-Kawkab al-Munir" and "al-Rawdah".