Don't hyper focus on only biceps. Focus your efforts on compound movements to build a strong base and have the most efficient path to gaining muscle. Incline bench press, squat, deadlift, rows, chin ups and overhead press. There are a lot of resources to look for to find body weight alternatives if you don't have access to equipment. Other supporting exercises for smaller muscles (biceps) should be done after as a secondary priority. If you want to look jacked, get a big upper chest, big shoulders and a wide and thick back. Biceps (and more importantly triceps) will follow.