• Use various grips and target long head and brachialis. Overhand and underhand to target tricep heads.
• Use various rep ranges, loads, and tempos.
• Focus on compound lifts – pull-ups, rows, bench press, dips.  4-6 sets
• Secondary focus on isolation movement including: pressdowns, kickbacks (cable, band, and DB), skullcrushers (particularly like doing them with kettlebells), tricep pushups, incline curls, incline hammer curls, spider curls, reverse curls. 3-4 sets.
• Target the long head of the bicep with hammer curls and reverse curls. 
• Target the short head of the bicep with standard curls and curls with rotation.  Train them at different starting lengths (elbows in front with preacher/spider curls, and elbows behind with incline curls).
• Train triceps at different starting lengths (eg. kickbacks = shortest, pressdowns = middle, overhead extensions = longest).
• Triceps are larger and comprised of three heads. Perform more triceps exercises than biceps. 
• Superset biceps and triceps exercises.  Also use drop-sets to increase time under tension. 
• Train back and chest (followed by arms exercises) 2-3 times per week.
• Focus mostly on full range of motion with occasional partials. 
• Nutrition: Protein 1g/lb of bodyweight. Caloric surplus 16-18xbodyweight.  Occasional use of pre-workout with creatine and nitric oxide boosters. Glutamine 10g nightly. Magnesium (200-400mg) and zinc (15mg) nightly.
• Lifestyle: Sleep 6-9hrs, meditate, stretching, and foam rolling/massage.

Check out the following exercise videos to help you on your journey to building massive arms: chest exercises, back exercises, biceps exercises, triceps exercises.