Yes, one binder might be enough (we totally understand), but a few smaller binders make it easier to tote key binders around with you to appointments. Blogger A Bowl Full of Lemons stores hers upright and organized on her counter with the help of a dish organizer.
Our suggestion is to pick one tip and write it down in your journal. Read it everyday and start practicing it in your career every single day. http://www.classycareergirl.com/2016/01/career-advice-best-100/