Which is the best book among those mentioned for studying Fiqh, and do you recommend the book "Fiqh Al-Ibadat and Fiqh Al-Muamalat" by Al-Sabuni?

To seek the knowledge of Fiqh (Islamic jurisprudence) according to a sound methodology, it is advised for beginners to avoid books on jurisprudential differences and instead start studying Fiqh from the accredited madhhab (school of thought) foundational texts (mutūn). Then, they should gradually progress to their commentaries (shurūḥāt) and glosses (ḥawāshī), seeking assistance from a proficient shaykh. This methodology helps the student connect subsidiary issues to fundamental principles and understand the objectives of Sharia. The jurists of the Ummah, such as Al-Nawawi and Ibn Taymiyyah, followed this approach.

As for the average Muslim, "Al-Fiqh Al-Muyassar" is recommended due to its simplicity and its consideration of the preponderant opinion. Following that, "Al-Mulakhkhaṣ Al-Fiqhī" by Shaykh Al-Fawzan is advised, along with reviewing "Al-Sharḥ Al-Mumtiʿ" by Ibn ʿUthaymeen.

The books of Shaykh Al-Albani are valuable for their mention of evidence and ease of style, but they should not be relied upon exclusively due to some of them being incomplete and not covering all rulings.