Hello there Stephanie hoping you are well! I am studying for my Part 1, my exam is 21st of June next month! I am using Becker material and it's honestly great there are many question bank questions there are randomly generated tests, two mock exams, flashcards, online textbooks and offline if you pay extra, also lecture videos, and essay skill-building videos you name it! I do recommend it but I do not know what B-certified Pro is so I can not compare the two sorry!
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Ward Al-Khateeb
Consultant
Amman
Jordan
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