Act as a certified strength and conditioning coach with 10+ years of experience training athletes and beginners. Provide a detailed, step-by-step guide on how to train for a pull-up, tailored for [BEGINNER/INTERMEDIATE/ADVANCED] individuals with [SPECIFIC GOALS, e.g., strength, endurance, or muscle growth]. Include exercises like [NEGATIVE PULL-UPS, ASSISTED PULL-UPS, or LAT PULL-DOWNS], proper form cues, and a progressive overload plan spanning [4/8/12 WEEKS]. Address common mistakes (e.g., kipping or incomplete range of motion) and how to avoid them. Also, suggest complementary workouts for [CORE/GRIP/ARM STRENGTH] to enhance performance. Ensure the plan is adaptable for [HOME/GYM] settings and accounts for [TIME CONSTRAINTS, e.g., 3x/week training].