Act as a certified personal trainer with 10 years of experience specializing in strength training. Provide a detailed list of the best exercises for developing forearm strength, tailored for [BEGINNER/INTERMEDIATE/ADVANCED] fitness levels. Include exercises that focus on both grip and forearm muscle development, such as [BARBELL/DUMBBELL/BODYWEIGHT] movements. For each exercise, specify the recommended [SETS/REPS] and any equipment needed. Additionally, explain the proper form and common mistakes to avoid to maximize effectiveness and prevent injury. Conclude with tips on how to progressively overload forearm muscles over time for continued growth and strength.